I try to be friendly to almost everyone. But I will be curt and just say no thanks. I told the Jehovah's Witnesses that I occasionally went to the Unitarian society. They had no idea who that was. So I gave them some history starting in the 13 or14 hundreds as non Trinitarians. At which point they are like we are long lost cousins. Uh, no, and even in Romania where the Unitarians haven't joined the Universalists, and still consider themselves Christian, they would gag at being compared to a Jehovah's Witness.

Let him know that I'm an atheist not agnostic. So I've haven't had a relationship with a nonexistent intity after 5 years when my invisible twin sister was replaced by a very real brother.

I listen to what they have to say, then explain to them why I feel the way I do about religion. I have been known to discuss religion with Mormons, Christians, Jews, Muslims and even once with a Jehovah's Witness.

I've been through this enough times. I used to take the time to engage the religionists in conversation, but I found in time that they're not really listening.

I analyze the person during the conversation it is so easy to run into brick walls it's rare but some people can actually maintain a civil conversation without getting emotionally involved. I use to work myself over with people who are so emotional about it.

I did once; but he left before morning.

I have a problem if the situation occurs at work. I really do not know what to say to the offending person. I do not want to start and argument but I don't want to take their BS. I usually just shut-up and walk away. Otherwise, I am intrigued and will discuss religion with the best of them.

I put it this way, I ain't interfering with yer divine creator's omniscient plan. I am not participating either. Shame your heavenly father chose to keep that information to himself, eh.

I just don't participate in the conversation.

It depends on my mood. Anger, disdain, annoyance, uninterest or I simply walk away.

Much like dealing with children, I am polite but firm in the I don't want to discuss this with you.

Amusement. I might say something like, "Nah. Full blown atheist."

Mostly indifferent, although if someone wants to have an intellectually honest and substantive discussion about it, I'm up for it. However in practice, apart from forums like this (and most often, even ON forums like this) there is no such thing as an intellectually honest and open theist. They cannot support their beliefs, only "defend" them. And then they quickly find themselves on the losing end of the bargain, and then they see it as an existential attack / threat, and they become angry and defensive, and hilarity ensues.

As with all idiotic ideas I feel the need to enlighten, like it or not. Funnily enough I don't seem to have any religious friends, or at least willing to admit to their foolishness.

I tend to engage with them if they can intelligently discuss my views as well.