Atheist with Religious OCD?

i had a problem with this but if you look into it religion is a form of control because every sin is now a law but one thing god likes is war and invasion it's ok to kill some one how dose that make sense if hell is not a real place it is used to create followers. even though you an atheist it dose not mean you don't have to believe there is nothing after death as i believe there is some thing after death but it's nothing no body can tell me unless they came back and said it. lol