> If I thought that we were on track to a Future where no one cares about human life, and lives that could easily be saved are just thrown away - then I would try to change that. Not everything worth doing is easy.

Spare me the dramatics!

I continue to not understand the economics of reviving people in the future. Your argument here seems to be that reviving frozen heads, no matter the cost, is a moral obligation. That does not make sense to me.

Thought experiment: tomorrow, John Q. Scientist reveals that he can, for the cost of $1 million, revive any person who has been cryogenically frozen. Say 1000 people are frozen cryogenically in an acceptable state right now. Do we revive them? Why? What if they will only get (maybe) another year? 5 years? 10 years? Who pays for it? What if it's $100 million?

The only people I imagine willing to pay for the operation are loved ones. Very rich loved ones. And in a large portion of the scenarios I imagine, there's at least a few generations between yourself and the technology to defrost people. Who will pay when there's no remaining loved ones? Is it a moral responsibility to spend the money? Why?