some scenarios where you are worse off for having chosen cryonics even if you are never frozen.
I don't think I've seen any such scenarios explicitly displayed yet. Here's one that I think might be plausible:
Assume that cryonics and organ donation continue to be technically incompatible
Assume that organ donation becomes "opt-out" rather than "opt-in" (true in some places now, e.g. Spain)
Assume that opting out for organ donation makes one ineligible to receive a transplant (not true now, but I've heard it proposed) ( new information: something similar is in place in Israel )
Under this scenario, the loss of eligibility for receiving a transplant would become a liability of cryonics, even to those cryonicists who are never frozen. My guess is that the odds of this happening are low, but not exceeding so. Perhaps 1% 10%? (updating odds for similar policy no-give-no-take policy to go into effect in the U.S.)
The scenario I had in mind (which is probably more far-fetched than yours) is that (1) good life extension technology becomes available; and (2) in deciding who should get the benefit of this technology, the powers that be decide to categorically exclude anyone who has ever signed up for cryonics.
From Mike Darwn's Chronopause, an essay titled "Would You Like Another Plate of This?", discussing people's attitudes to life:
Conclusion, graphs, and references in article. As usual, I recommend reading Chronopause.com as Darwin has many good articles; to quickly link a few: