Thalion,
I'll address your question too.
My point of view goes something like this...
It has been my experience that a large number of religious people don't question anything very much - what their parents tell/told them, what the police officer says, what the priest says, what the teacher says, or what the government says.
I have a hard time respecting someone's belief* when they don't have a reason for believing in something. Or their reason is because my parents were "fill in the blank". When they haven't thought "why do I believe in this?"
That being said, I respect a number of people's faith because they can articulate clearly why they believe what they do. They may have investigated a number of different religions and chosen the one that is right for them - the one that best aligns with their personal beliefs.
Personally I have a hard time with organized worship and belief because it seems more likely to me that in the beginning there was an agenda behind those organizations that wasn't necessarily in the best interests of the people. Any time there is a hierarchy in a belief-system I question the motives.
I don't go about "promoting atheism" but I'm a big fan of independent thought - rather than referencing a set of rules to form my opinions. So I will encourage others to think independently about subjects rather than offering me someone else's opinion on a subject, or what may be written in the book.
So if someone tells me that being gay is bad, abortions are wrong, or drugs are bad - I'm going to ask why. And I don't want hear "because it says so." Because that implies that someone isn't thinking about it, rather they are reciting something they've read or heard.
At the end of the day I think a number of atheists feel as though their rights are being infringed upon by many of the religious groups (see gays and abortion). I think that is probably the biggest reason you see non-believers taking believers to task for their beliefs. I can't speak for anyone else here - but I agree with the basic principles of most religions - I just don't need to believe in a god to understand why they are right.
If we all believed in good we'd have nothing to fight about
*note when I say "respecting someone's belief", I'm referring to a respect for their point of view in a debate situation, not a respect for the person or for their right to hold whatever belief they want - everyone is entitled to that so long as they don't infringe on my rights.