Future you (or "you") won't give a shit. Present you may or may not have cause to worry. A simple thought experiment: We somehow copy me, but leave the origina

Future you (or "you") won't give a shit. Present you may or may not have cause to worry. A simple thought experiment: We somehow copy me, but leave the original alive after reviving the copy. Then we kill the original. As the original, I'm gonna be unhappy about that. The exact time you kill me doesn't change that, so killing me then copying me then reviving the copy at the very least isn't a trivially unobjectionable process. As to whether it's actually unobjectionable, that's probably way above our paygrades philosophically. There's a great star trek episode where Riker gets duplicated in the transporter, leading to years of jokes (and philosophical debates) that the transporter doesn't send you anywhere, it just copies you and kills the original. Real fun to think about.