About the evidence part... I guess it's just a habit. I'm used to proving every evaluative statement I make, as most academics are... and many atheists are academics. But I do realize that it gets annoying, fast....
I originally started this thread for entertainment purposes, anyway... but it soon mutated to this atheism vs christianity debate...
Nevertheless, I like to talk about religion, and you just have to use facts in order to have a reasonable debate... if everyone tells you whether or not they believe in god.. it's not a real debate... it's merely a poll.