prove it
*edited*
He doesn't exist, because there's no evidence. You're not going to get your answer from the bible, either. It's filled with a bunch of lies and shit. It's a useless source. Christians claim they see God as a person, but they got no "proof" of it. Anybody idiot can say that, but proof is the key here.
I haven't seen this god create miracles or any other crazy stuff like that. He doesn't exist. Christians live in a fairytale.