We are here I believe, because Aliens planted us here. I believe Aliens were our beginning rather than the biblical god stories.

Whatever reason it takes I guess.
.
To me this is asking why does grass grow.

42

We are here because we were born. The sad thing is that so many think it must be much more complicated so they start making things up. This way they will present themselves as the person with all the answers when you talk to them.

No condoms

To take out the garbage.

We are here because by a random galactic incident, a star was blown out and took with it debris that cooled and became planets, including this one. Over eons, life forms moved from microbial to swimmers to crawlers to walkers, to upright and here we are.
Beyond that, I guess we are here because we are. What we do with that is up to us.

OK, it's late and you're gonna get weird shit at 2 in the morning! Smile!!

Because. Duh.

And what are you doing over there? Hey you! Get away from that...

The purpose of life is to beget more life.

Life goes against the probabilistic direction of increasing entropy in the cosmos. Information is the mathematical negative of entropy(Shannon). Genetic code is the information that defines an organism. Mixing that information begets baby organisms(more life)

Our mind/spirit/emotion/psychology is our conscious life which contains orders of magnitude more information than our genetic code. Mixing our consciousness through conversation/bonding/love mixes the information in our consciousnesses and begets consciousness babies e.g.social constructs, languages, traditions, memes, cultures, tribal knowledge, etc.

We're here because we're here because we're here.

"We" are here because if it were only "Me" I might get lonely having only the birds, beasts, and fishes to converse with. Not that they do not make fine and enjoyable companions, but their somewhat rudimentary vocabularies render them rather poor conversationalists in matters of physics and philosophy which interest me. Also, I have come to appreciate and find pleasure in the musical and artistic creations of my fellow human beings, so I am content to share a bit of my vast Universe with them.

Because amino acids combined into complex proteins.

I believe we are here to make a difference. Every little effort helps.

That would be a philosophical or theologian question. “Why are we here?” Is not an objective question. How do you quantify it? I don’t see that there is no “why” or deeper “meaning” to life. Life is what you make it, you make your own meaning to your individual life. Or maybe as a famous Poet put it: “O Me! O life!... of the questions of these recurring; Of the endless trains of the faithless—of cities fill’d with the foolish; Of myself forever reproaching myself, (for who more foolish than I, and who more faithless?) Of eyes that vainly crave the light—of the objects mean—of the struggle ever renew’d; Of the poor results of all—of the plodding and sordid crowds I see around me; Of the empty and useless years of the rest—with the rest me intertwined; The question, O me! so sad, recurring—What good amid these, O me, O life? Answer. That you are here—that life exists, and identity; That the powerful play goes on, and you will contribute a verse.” Walt Whitman

We are here to do our own small part in helping the human race to answer the question you just asked.

The same reason there are billions of other planets and stars populating the universe: science.

because of a perfect storm with everything coming together the right way at the right time

Here to use my brain, talk to people with common interests and possibly meet a man for a long term relationship. Traveled and spent time with fellow member resulting in friendship.

We’re here because the laws of physics demanded it.

I’d like to think that in a few billion years humanity might observe our dyeing sun from a safe distance.

The same physics that brought planet earth, and the life phenomenon it harbors, will eventually take it out of existence.

Personally, I think we're here to create. It doesn't matter if it's art or carpentry or or technology. Once your basic needs are met, adding to the world is all we've got.

No reason, no reason at all.

If there is anything to the quantum theory that until something is observed and measured then it does not actually exist, life is an innate and necessary part of reality,

we exist therefore it is, it is therefore we exist

esse ergo sum
Ego igitur esse

There are no answers.

I'm here because I was tired of being trolled by the alt-right on the last two Facebook groups I joined. I since ditched them.

I get trolled a lot here, also, but luckily, there's a "block" button.

It seems that many here object to anything I say about the supernatural or gender issues, LOL!