[Adam the Fish]

Your first question is pretty ambiguous, but I've personally never seen satisfactory evidence for what I consider a god to exist. Some people consider religious texts to be evidence, but since they're stories written by humans, I don't find them convincing.

Your second question is a little more stereotypical, so I'd discourage that. If you're being driven away from religion by that, I'd suggest thinking a little more carefully about your actual beliefs (which may well be atheistic), not just people who irritate you. Religious people are normally perfectly lovely, normal people - everyone has some annoying traits.
As far as "God should..." goes, this might well be a reason for you to abandon Christianity, since that's not really what the Bible (upon which Christianity is primarily based) says. You can have your own "personal" god if you like, although I don't see that as necessary. As far as I can see, you may as well live morally simply because it's nice to, and helpful for everyone - why should you need an incentive, ie. avoiding the disappointment of a god?