The question of “what happens after I die” really is a question of what is considered the “I”. If I identify with the mind then I must explain where I will remain or go. If I identify with the body then I remain as the corpse and no process of sentience or animation remains. If I identify with both body and mind I still have to explain what remains and what goes where. If identify with something else I must explain how I know this other substance.
For me, to identify with the body is to deal what is at least confirmable. All else are unanswerable questions.