I'm an athiest but studied AS level Religious Studies at school as i am fascinated by other peoples religions, thoughts and reasonings.
Now every religion and person on this earth has their own theory on what happens. Whether it be God, nothing, heaven and hell etc.
But what everyone didn't seem to understand is that there is no proof at all as to whether there is something or there is nothing. Nobody knows or will know until they die. At which point if there is nothing, then we won't know anyways 
I dont want this to turn into a bun fight and i am respectful of all peoples thoughts. Each to their own etc. So what do you think happens?