I believe when you die it's just like sleeping without being able to dream. I know a person dreams every night, it's just weither he or she can remember their dreams, but the nights when you can't remember your dreams, isn't it like nothing exists? When you sleep your concious brain isn't relaying infomation that you can specify, or identify.
I deffo don't believe in heaven & hell, they were just scare tactics made up by an out dated dead religion; christianity.