>>If the implication is made before my death, in law, that I do not own my body then I am not protected when I'm alive. We can all make whatever wishes we want

>>If the implication is made before my death, in law, that I do not own my body then I am not protected when I'm alive. We can all make whatever wishes we want before our deaths, but they are just suggestions not law - like OP said, dead people(corpses) are not legally people anymore, they have no rights. The law protects your body from certain things, but it's by binding the living, not by granting the rights to the dead. To put it in other words. You absolutely own your body - while you are alive. When you are not, you don't because you don't exist anymore. It's not yours, because there is no you. We have a legal system that will respect some of your remaining wishes, and hence the ability to opt-out. But there is zero reason why the list should be opt-in by default, or at least I don't see such a reason, neither in your post nor elsewhere.