In a nutshell, it would make no sense for a Creator God to exist.why do you doubt God's existence?
Not with a world that all but screams to be of random existence. Not when people have to go to such extremes to even understand each other, when anyone can end up investing a lot of effort into a birth only to find out that it happens to be acephalic or hydrocephalous (sp?).
But perhaps most of all, it makes no sense that people would make such a big deal of the need of believing in God's existence if he did in fact exist.