Yeah and to take what you were describing further, we can’t ever really be sure our lives existed at all. If the universe was created in its current state 5 minutes ago, we would have no way to know.

But anyway, the ease of accepting one’s own continuity from day to day is part of the teleporter problem. It’s at the heart of it, honestly. I think it’s a given that the copy of you that comes out the other side will believe that they are the original you and will assume your identity and life without skipping a beat.

The concern is the likelihood that you experience a quick death by being vaporized while the copy of you experiences the “created 5 minutes ago in current state with memories intact and can’t prove otherwise” phenomenon.

I’ll also add that as far as we can tell, our conscious minds are emergent properties of our physical brains. Losing consciousness while verifiably keeping your brain in a specific spot is quite a bit different than disassembling your physical brain and reassembling it somewhere else.

If we instead had evidence that our souls/identities existed on some other plane and our brains were more like antennas, I might think differently.