Consider that undergoing anesthesia completely suppresses consciousness. If one posits the existence of an immaterial soul which survives bodily death, how do they reconcile that the immaterial soul cannot even experience consciousness when one is under anesthesia?
Edit: Some people have been worrying about my use of the word "soul". So, let me revise my question without making reference to this concept.
If I am not able to experience awareness during anesthesia, why would one suppose that I could experience awareness after having my head completely chopped off?