People regularly perform backups of their mind. In the 
  case of death or injury or illness, a new body is grown 
  and their backup is restored into a new body.

...

  and their backup is restored into a new body.

Well, yeah, of course you'd want that. Because it's just SO reassuring to know that even if you die, an identical twin can pick up where you left off.

What a relief, to know that something that looks like you, can keep listening to your favorite bands, wearing your clothes, eating the same favorite foods, and having the same opinions about the world after you die.

Me? If I had a brain back-up, and they could grow a copy of my body in a vat... Why, I'd just run around fighting lions with my bare hands, and wrestling hungry sharks in the ocean. Who cares if I get completely eaten and digested?

The new copy can pick up where I left off, and just beat up whichever animal ate me!