Recently I've become more open minded about God. I personally have come to hate religion. The church (whether it be Christian, Muslim, Hindu, etc) has a very twisted and narrow minded view on how people should live their lives according to the church's rules. I do believe God exists (Christian God), it's how I was raised and you can argue that's why I believe in Him, but God creating everything makes the most logical sense to me.
I do wonder the same things as CY, what makes one religion or belief right and the other wrong? It's very hard to say. Though some religions believe in killing others to please their God while my religion, down to it's core, is about loving anyone and everyone, not persecuting them even though many "Christians" believe God's judgement and hate is his will. Now, you're going to have crazies in every religion, this is inescapable and gives each religion a bad reputation, which is again another reason I have come to say "screw religion, I am sticking to my beliefs and leaving it at that".
Who's to say one is right and one is wrong. I've heard stories of people dying and coming back to life, where they died and went to hell then came back through medical means and changed their belief or unbelief to believing in Jesus and God, die again and go to heaven. Now who's to say this is real or not, no one but that person can know. Who's to say Jesus wasn't the biggest troll of history and everyone that follows him is getting trolled, who's to say the same about Mohammad or Buddha.
Ultimately what I'm trying to say from this sidetracking is God comes down to belief, not proof. No one can actually prove God's existence. We can see what is around us and give God the credit for what is done, maybe he made the universe or maybe it was the Big Bang, though believing a perfect all-knowing deity creating something like the universe and all that's in it is a little easier to believe.
I personally know that the view Christians have of God is this: we all have a free will to do with whatever we please, to believe in God or don't. They believe that God has given us a free choice to follow him or reject him, He didn't want to make us like robots that are programmed to follow everything He wants, He wants us to make the decision and accordingly so everyone at one point in their life has the opportunity to make this choice.