Would you be willing to become batman for this? Say some obnoxious redneck at a Tea Party rally shoots himself in the foot, gets infected, the faith healer can't fix it so it just gets worse until his whole leg smells like the week after Gettysburg. Would you break into the morgue, cut off his head and have it cryopreserved, at your own expense, against his wishes and the wishes of his surviving family, if you had the cash and were reasonably certain you could get away with it? How much do you care?

To be honest, yes, that does sound like a net moral positive to me. That doesn't mean there's no opportunity cost, though; right now that's probably nowhere near the optimal thing for most people to be doing, even if it wouldn't be a net negative.