Atheists can you explain to me why you are so certain that God doesn't exist. I am an agnostic.

I'm agnostic, because I don't want to believe in something that might not be true. I don't want to be wrong. I think the belief of the existence of God is a big claim, and I think it should be backed up by a lot of evidence. I don't feel like there is enough evidence that God exists, so I don't believe God exists. I also know that it isn't possible to prove a negative, so I can't be 100% certain that there is no God because there could be a God that doesn't leave any evidence that it exists. I think it's much more likely that God doesn't exist than it is that God does exist. I feel the same about ghosts, vampires, werewolves, and dragons. It's possible they exist, but it's unlikely because of the lack of any evidence that they do exist.