Yes.

Very comfortable

I don't have a problem with the term. It's just a word, and although many of the labels we ascribe to people can be too narrow and limited, I don't think "atheist" is.
Where it is a problem is when religious people think of it as another belief system.

I am comfortable with Atheist, but maybe we should call ourselves "non-delusional" versus the "delusionals".

Frankly, I really don't like the term. "A-theist" simply declares 'what you're not'.

It's like someone asking you on the phone, "What color is your hair?",
and you answer with, "I'm not a blonde."

On the other end of the line you hear...
"Ummmm... okay... Well, I wasn't asking what you're 'not'... I was asking what you 'are'.
Okay, you're just too weird. Good bye." (-click-)

I am a devout atheist, and believe atheism makes pecfect, logical sense. Follow along: amoebas who were brainless, virtually shapeless forms of early life, supposedly somehow multiplied and developed into a higher form of life???? What about dinosaurs, again, brainless forms of life who basically scavenged for food when the only food was tree bark and greenery. Did God then say " OOPS, made a mistake, don't quite like this life form", and so instead of vaporizing these poor creatures, he covered the earth with a thick black cloud and suffocated these poor animals to death. Can you even imagine gasping for air where there is no air left to sustain these life.
I have lived in my own personal hell for over half a century, and for 35 of those hellish years prayed to a God that never once answered my prayers. There is no loving, kind merciful God that would create a thing to suffer from birth to death. There are dinosaur bones, proof of both Cro-magnum and Neanderthal man, the skeleton Lucy, but nothing showing a compassionate loving entity watching over His Supposed creations.

I don't mind the term at all. However, I cannot say with 100% accuracy that I know there is no God. But everything I have seen and believe makes me think with great certainty that there isn't one. However, like science, if someone ever gives me definitive proof, I'll take it. So I'm agnostic.

I am comfortable with the word, but so many people misunderstand what atheism is. I'm agnostic, but people think I'm atheist when I talk about my agnosticism because it does entail components of atheism. Also, theists think that atheists hate god(s) and so take offense, when the truth is that one cannot hate something that one feel does not exist.

To use it in some circumstances it seems harsh, especially here in the south USA. Sometimes I politely just say I am not a believer, or I might say I have found no compelling proof that it really helps anyone or is true. I have done many things for my community and have heard that people have said they didn't think an atheist would be as giving or helpful. I simply say we are all humans and are in this struggle called life together.

I am very comfortable with the word "Atheist." However, you have to understand what the word means and how to use it in a sentence.

First of all, the word atheist is derived from the Greek language, the letter "a" meaning "non" or "not" and "theist" meaning someone who believes in theology or the study of religion. A person who is atheist does not conform to theology just like asymmetrical is not symmetrical, atypical is not typical, etc.

When someone asks if you believe in religion or god, your answer would be; "No I am atheist." Notice that I did not use the word "an" in front of atheist. That is because the word "an" would indicate that you are part of an organized group. Unless you belong to the First Atheist Church in Dallas, I would guess that you do not belong to a group that teaches atheism.

Meh.

I don't think we should justify what we do or don't believe atheist have been around a lot longer than any religion.

I am neither comfortable or uncomfortable with the word "atheist" because it doesn't apply to me. Compared to the history of what we know of the current universe, humans created all their gods- and it was such a short time ago. It just doesn't interest me.

I don't like the baggage that comes with the word - but then again, it doesn't really apply to me. I am more comfortable with the term "non-theist".

I'm unfortunately very uncomfortable with the word atheist even though it is the most common term that would describe me. Though I suppose I'm technically anti-thiest. I'm an introverted person and I don't like conflict so I don't like using a word out loud to someone who doesn't know me. There's such a stigma against atheists that's mostly why I hesitate to use the word in conversation. Luckily it doesn't come up in conversation very often.

I understand what you are saying and rather agree but I don't mind saying Im an atheist.

very.

I am very comfortable with using Atheist as my label. I am actively involved in our local Atheist community, and we try to de-stigmatize the word by using it in our everyday life. I have had some believers who behaved as though I had the plague when they learned of my Atheism, but they usually come back around after they realize I am the same person they knew before .

Very comfortable.

i am not an atheist.
i am simply a non-believer.
i also, generally speaking, never have felt like a blanket label of any kind has fit me properly.
to me, to consider myself atheist would be to assert that i know there is not a god or gods -
a certainty.
that would be foolish in my estimation.
i'm not agnostic - because i'm not searching or questioning either.
i neither know nor do i care one way or the other.
i'm not interested.
so, i do not use this term for myself.
i am perfectly comfortable with it for anyone else who chooses it for themselves -
but as a general rule will refer to someone as a non-believer until i know their preferred term/label.

People always try to label things. Try to put everything in it's own little box. Each person should be allowed to think, wonder, love, and be free as long as they are not hurting someone else or imposing their will on somebody else. How can one have an honest discussion when people are labeled as snowflakes, progressives, libtards, Rebuplicrats, liberals, conservative, anti-Semitic, conspiracy theorist, etc. You get the idea. Republican/Democrat no matter the end result is the same. We the people are under attack, and so often the "official" explanation is contrary to the facts but most choose to believe it anyway.

It depends on the audience. I try to be non-confrontational until confronted. Experience has shown me that there are people that will be confused by the term atheist because of negative connotations. I'm not comfortable starting a fight with every true believer that comes along. I would rather pick my battles.
Remember that there are preconceived notions about that word and you can really stir up a bunch of quotes they've heard or feelings that they've had but if you offer up a description such as "I don't believe in any superstitions, even magic, ghosts or gods" you can put them on the defensive, force them to think about what they are saying. It might even make them think about what they really believe if they aren't otherwise superstitious or don't believe in ghosts. Don't hold your breath though.

Know what you mean.
I hate the word Brexit. But just try having conversation in the UK without hearing it.

Have no problem telling people that I don't believe in invisible men.

It don't bother me