How can one be better than the other?
If someone strongly believes in a god and it helps him through live that's great for them, but if someone just doesn't believe in a god that's great too.
For me, I haven't been raised very religiously at home, though some religion tends to be mandatory in nursery school. But even then it never seemed quite feasible to me, a almighty guy sitting around somewhere in heaven, seeing everything, judging everything by some arbitrary rules he just made up for some reason, expecting us to believe in him without giving us prove. Didn't seem logical to me. The scientific explanations always made a lot more sense to me, so I'm an atheist.
Of course I can't be certain there is no god, but I rather believe in a well thought-out theory, then in a per definition unprovable god.