On religion, Two views "I believe in a God and he is all omnipotent and omnipresent" and "I believe that God is a human invention and was created for self-fulfillment".
Why is the man with the latter view usually considered the offensive person and the former always the victim?
GoodGame already nailed it: everyone feels that he's discriminated against or isn't appreciated enough. Take an arbitrary person, and ask what he does for living. Then dig out how he feels about the respect his profession gets, and with 95% probability he'll blabber endlessly how the world doesn't understand the importance of paleontology to the science or something like that. If he's in theoretical work, the world respects only material things and wealth. If he produces material things, world doesn't understand how important they are, and we wouldn't survive without.
Theism/atheism thing is very much region and population dependent, but I'd suggest to make little survey on off-topic discussions: There's about always on the first page at least one thread where atheists are saying that others must think like they do. Then count all the threads started by theist to convince people to believe in god. I don't mean that no discussion is appropriate about religion, but much of those threads lack the respect people should have to the people they are debating with.
And I don't think vocal atheists compare to missionary theists, but rather to fanatical theists, those who preach death to gays and abortionists, and they
are considered offensive. Missionary theists are trying to inform people*, not to convert them.
Actually I don't think that there's any difference between theists and atheists. Most of them are just normal people, and then there's little group which ruins the reputations of the others. And I'm just hating it if I'm giving ammunition here to one or another. But since this took a while to write, maybe I'll post it.
That is how it always works out to be when I have a conversation about Religion with religious people.
Why am I always the bad guy?
If it works always that way, perhaps you should consider the possibility that the fault is in you.
EDIT: Black Jewish lesbian... You must suppose that the preferences are dependent on each other. If they were totally independent, it would be more likely that none-other minority atheist would be chosen. They probably are somewhat dependent, but how much, who knows?
*
Which can be quite amusing too. Not long ago two women asked me in a park "Have you heard that Jesus can forgive you all your sins", and the first thing that came to my mind was act surprised: "Really? Wow! Well who is this Jesus bloke? I've heard his name somewhere, but can't now recall, was he that Polish guy?"