Try and think about life the 13+ billion years before you were born. Exactly. You can't, because you were nothing. You have no "thought" no "conscience" no nothing. It's just like going to sleep at night. While you are asleep can you think? Are you conscious? I assume that's what death is like. I hate touching up on the topic because I too am personally scared to think about it, but implying there is no God or afterlife we will be nothing like before we came to this Earth. I don't know if there is a God or not. I really hope there is. I've been raised around a Catholic family my entire life and gone to a Catholic private school my entire life and I still think about it constantly, and I hate doing that.