Adam Ozimek at Modeled Behavior has an interesting piece on whether we should be able to sell years of our lifespans.
This is, I think, exactly the question addressed by J. David Velleman in his article Against the Right to Die, wherein he argues that giving people a choice can make them less well-off, even if, given the choice, they choose correctly. Velleman is concerned with assisted suicide - shortening lifespan to avoid suffering near the end of life. Ozimek is concerned with shortening lifespan to promote other values, but the moral logic is, I think, the same. I respond to Velleman's article in my piece Velleman's Sorrow of Options.
Also exactly on point is Velleman's related article A Right of Self-Termination? in which he argues that it is morally unproblematic to force people to remain alive, because by choosing to shorten our lifespans, we somehow abrogate human dignity, which belongs to everyone, not just to ourselves. Velleman thinks, for instance, that accepting a shorter lifespan in exchange for the pleasure of smoking is morally wrong and an affront to all humanity. I respond to this in my piece Respecting and Erasing, essentially challenging the notion that limiting the span of something in time denies its dignity.
Other writers think that dignity, as distinct from autonomy, is just stupid.