Some would argue that having one’s “molecules scrambled,” as Dr. McCoy would put it, is actually the surest way to die. Sure, after you’ve been taken apart by the transporter, you’re put back together somewhere else, good as new. But is it still you on the other side, or is it a copy? If the latter, does that mean the transporter is a suicide box?
https://arstechnica.com/gaming/2017/09/is-beaming-down-in-star-trek-a-death-sentence/
An old article (2017, whose impetus was the imminent release of ST: Discovery) but a good one.
Is the copy of you, you? Or is it a brand new person with the same memories? Would it have ANY memories? Would it have the same consciousness? (Or ANY consciousness?)
Of course, you can always stick to the “David Brin Theory” of teleportation: “Some dude in the future will figure this all out.”
Lazy writers!
(This is why, in my novel, I stick to quantum teleportation of inanimate objects only. That includes quantum communication relays, chunks of asteroids…miniature nuclear bombs…you know, “realistic” things like that.)
And, yes, quantum teleportation is real. Just very, very tiny. For now.
I should be finishing 
