If you don’t mind there’s no problem, of course, but quite a few people want to keep living. If you told a terminally ill person “so you’ll die, but don’t worry cause we can clone you and tell everybody you got better” I think “oh well then no problem” wouldn’t be a universal answer.

Because I don’t really care about what the copy can do and think, because I’ll be dead. My self disappears, even if someone else has a copy of it.

Yeah but once you step in the teleporter you stop being. The copy is only useful for other people to keep interacting with your clone, but the actual you is dead.