It's kind of hard to not believe in God. It's easier to be unsure.
This statement actually seems contradictory, in a way. When you say that it's hard "to not believe in God," you're essentially saying that it's easier to believe in God than to not have a belief about God's existence. However, it's clearly easiest to be agnostic towards the existence of God (which is not believing in God and not believing that God does not exist).
Anyway, I'm too lazy to formally point out your error in meaning, but I think your statement, if properly worded, should've said something like this:
"It's kind of hard to believe that God does not exist. It's easier to be unsure."
However, that's a matter of debate in itself that I'll let you guys have. I have other fish to fry.