Then, pray tell, why do so many people work so hard to go from the Third World to the First World, when the Third World has higher population growth and so a higher chance for more surviving grandchildren?
This is the best anti-cryonics argument I've heard so far. I largely agree with the replies about why it's wrong, but at least it's an argument rather than a gut "ewww..." or "blasphemy!" or "crazy talk!" reaction.
Nice! Will probably be there.