I don't entirely agree with you, but your opinion is yours. About the war thing, many people started wars for various reasons. It was just about the enviorment and and time they lived in. Some people did it because they wanted to be free, some because they wanted land, others because they wanted to overthrow a ruler. Some historical figures were just truly evil people, and wether or not they had a God to blame it on the wars would've still continued to be fought. The amount of Christians/Jews/Buddists that I've met seem like fairly reasonable people, with truly good intentions. It says in the Bible to love and respect everyone, even if you dislike them or disagree with their choices. Of course, there's the occasional rude "christian/Jew/Buddists ect." that try to convert people, though I've mostly seen this from atheists. (I've had several bad encounters with atheists, saying really, and I mean REALLY rude things about religious people.) I'm not too religious myself, (though I consider myself Christian) I love reading and studying about the Bible and other religions. I do think you need a certain amount of knowledge on a topic before you debate about it, you can't just say you've read the Bible once or twice and now your suddenly an expert, you need to know what it means.
Sorry for my grammar, I'm typing this on my tablet and I don't have any autocorrect on. This is NOT meant to be rude or hateful at all, I simply wanted to give my perspective. I agree with your main point though, which is to live and let live, or in this case believe in what you wish to believe and let others believe in what they want to.