I highly recommend playing Frictonal Games' Soma from 2015. It is an extremely critical examination of this entire concept. Without spoiling the plot, a digitized consciousness doesn't imply just one, but an infinite number of copies, some just subjected to torture as they are essentially disposable.

All of the concepts SOMA explored were already familiar to me, but the experience of exploring the through the game was so much stronger than reading about them in a text book. Such a strong, lasting effect, I wish I could play it again for the first time.