I don't think people have a problem with other people's beliefs. It's much more the tone with which atheists proselytize that gets people's feathers in a ruffle.

Besides that there are some obvious logical pitfalls to atheism. One possible logical problem with atheism is that if there is no God, then what ultimately forms the grounds for the claims of right and wrong? Is right and wrong formed upon the consensus opinion of the moment? If you change your mind that something such as unilateral warfare for profit is no longer wrong and everyone in the room agrees with you, then it's no longer wrong? If you've ever heard Chemmie pontificate, then you'd realize that right and wrong in his mind are as simple as what he thinks must be true. Same seems to be true with Tommstein. Ack!

But just because there are logical inconsistencies, which are possibly axiomatic in nature, with an atheist being preoccupied with right and wrong, it does not mean that they are in fact not preoccupied with it. And that's fine. But if they ever truly realize the liberation from morality that their position allows them, then I'd be worried. Sure there have been Christian tyrants. But their actions are in opposition to their professed beliefs. An atheist tyrant is doing what is allowable under his belief system. Two quick examples are Pol Pot and Stalin.