Here's my take. Not that you asked.
Most likely, there is nothing after death. The mind is a function of the brain. Even while we live, consciousness varies. It appears to drop to effectively zero, when we sleep and aren't dreaming. Maybe it's not absolutely gone, but it's so hard to tell the difference between dreamless sleep and zero consciousness that it's practically the same. When we die, the brain stops working. No brain, no thoughts. No thoughts, no consciousness.
Before we were born (or before some ill-defined moment in the womb), we had no consciousness. No "soul" or "spirit", I'd say. We did not exist. IMO, the most likely result of death is a return to that state. We no longer have any consciousness, no thoughts, no memories, no existence.
Other ideas of an afterlife are just as valid speculations, of course. Or maybe some are
not quite as valid.
