@evenflow,
This is like how they always have one rifle with a blank in it in the firing squad, so that the executioners never know for sure if they've shot the condemned or not.
As an infectious disease physician, I do a lot of work with organ transplant recipients, because it's a highly immunocompromised state -- and in order to see these patients I usually need information about the donor.
It is extremely hard to get. They arrange things so that the donor's family cannot learn who the recipient is and vice versa. So you never know. Your organ
might go to or come from a bad person. A lot of liver recipients are alcoholics and/or IV drug users, and even HIV patients are able to get liver and kidney transplants now.
But you know a lot of good people,
including children, die while waiting for organs. I'm ok with the occasional bad person getting an organ if it means we have a system that can save good people.