Religion says we're rebelling against God; Science finds differently.

[Haydn2]

I suppose that line of thought can be expanded on by creating a clone with an incomplete brain and just replacing the part that are breaking down. Or we clone ourselves with the brain in tact so we don't have to transplant, for example, the portions of the brain that control heartbeat or body temperature or breathing or digestion or hormone levels or something. Truth is, there are a lot of parts of our brain that don't really effect our mind.

Wow; this is kinda turning into a discussion for philosophy, isn't it?

Quite right , it would extend your life in those conditions although as you say , not indefinately.

And what you say about creating a clone with an in-complete brain , a sort of spare part version of yourself ..... that really might happen for people rich enough. I mean they are already using stem cells to create different body tissues. Creating organs ( with your own DNA) is a real possible conclusion to this. It certainly would eliminate the risk of organ rejection , but won't come cheap either.

Perhaps a creating 'special lady parts' in this way might be possible eventually and that might make for a far more thorough and satisfying sex change procedure.