...What I want to know is, why are you experiencing the memories of this specific person?
Due to the way memory works there's something weird happening with the way you're 'remembering' yourself right now. If you become someone else when you die, then you are effectively destroyed. You'd just whiz through every single life in an instant, not experiencing any of them due to this effect.
But that can't happen, right?
So, why am I remembering this person in specific, right now?