Evidence of God for me would be direct interaction. I would think a lot of people say they don't believe in God, just to say that they disagree with popular definitions of God.
For example, i refuse to believe in a christian God who is supposedly omniscient and omnipotent, yet is comfortable damning people to hell, and is a homophobe. what kind of god gives a shit what people do with their dicks? in the bible animal offerings are made to offer a 'sweet savour' unto the lord. he likes the smell of beef? go to maccas dude!
I was chatting with an anglican mate of mine, and i'm not saying her views are anglican, but when asked she concluded 'i guess God just has a massive ego. why else do we have to do all this shit to please him, to get into his special playground.' My next thoughts were 'yeah screw him, he has time to make the universe, but only time to make heaven and hell? are people's actions really black and white like that?'
I mean god already knows everything that is gonna happen, why's he letting it play out? what's the point? he's supposedly offering people a chance, but he knows they won't take it. where they fall to temptation, he gave them that hunger for evil.
so yeah after that rant, evidence of God for me would have to be something contradicting all that. I think anything as vindictive and stupid as the Christian God should just be called 'over-powered retard'.