Well, you found one. Even though I'm willing to give my marrow away, if the government or an insurance company wanted to pay me for doing so, I would take the money without hesitation. Why the hell not? I might even sell a kidney if the fee was enough to change the course of my life. I don't see what misguided principle would compel me to turn down the offer. If anything, my principles would compel me to accept it, knowing that someone's life depends on it.

Doctors, police officers, and firefighters accept enormous personal sacrifices and risks in order to save lives, yet we have no qualms about paying them and they have no qualms about getting paid. And even though most of them aren't in it for the money, if we didn't pay them then we wouldn't have them.