That sounnds like the sub-FTL version of Richard K. Morgan's 'Takeshi Kovacs' trilogy. Highly unrealistic, but a lot of fun. Essentially, elite soldiers are SPECIFICALLY trained to be "resleeved" into new bodies on distant worlds. The "fi" in the sci-fi enters in the form of FTL transmission of that information and ignoring Relativity. That said, it's an interesting view of a world in which the very rich never really fear death, but at the same time the very nature of life is uncertain to the point of madness.They could do that in order to live on elsewhere in the universe. Suppose you are a machine and you transmit the information in your digital brain and the information on how to manufacture the hardware that is running you from scratch. If this signal is picked up billions of years later by a civilization on the other side of the observable universe, then you will find yourself there in what seems to you to be just an instant.