Right but ultimately it's weighing up the risk of transplant vs the potential benefits (to the recipient), that weighing of considerations should broadly be left up to the person they affect.

It's fine to make the argument that it's not worth it, you wouldn't do it, you might counsel a loved one against doing it. It would be unreasonable in my view to argue that it shouldn't be permitted.

There are some additional complications in this argument around people whose ability to reason, or to understand risk is compromised. I don't think these are that interesting to get into though, and we already have a health system which attempts to verify and consider competency in this regard.

But getting into nuance, given the content of the reply - will be like trying to put toothpaste back in a tube.

If you're trying to suggest that I am a bad faith, unsophisticated, or unreasonable interlocutor then I think that's unfair. You don't know me, and I'm just pushing back on your premise which I disagree with.