If any sort of afterlife does exist simulation or not doesn't matter. Your brain is what makes up the thing you call your "self" without your brain your "self" ceases to exist at least in the state its in now. You see this mildly in people with brain damage that manifests in personality changes and memory formation and so on. If your sense of self and conscious state can be altered so much from a bash to the head what would happen if the brain was completed out of the picture. Who you think you are isnt really who you are, your personality is just formed from conditioning, memories and so on. Now believing that your soul or bodily energy goes somewhere is plausable but again whatever form it could take it wouldn't be what you consider as "you" its just not possible in my opinion to be aware of any of these happening after your dead and if you somehow were you wouldn't even remember who you use to be or where you came from after dying. You die and your life force is absorbed by the earth to perpetuate the cycle of life, whatever else could possibly happen wouldn't matter since it would be impossible to be aware of it whether its reincarnation, parallel dimensions whatever. These are just my opinions of course and who the fuck knows really.