[SauronOfMordor]

Post-mortem payments to estates are cool; it will encourage more people to be organ donors.

Potentially not cool. If your hostile ex-wife is your only available next of kin, and has to decide if the plug should be pulled, do you want her to have an extra reason to off you?

I have not checked off to be an organ donor. I do not want to be in a hospital just when some vip needs my heart

[Doe Eyes]

If your hostile ex-wife is your only available next of kin

These things can be clearly spelled out in a will. No reason to have a hostile ex-wife involved.