(I just love that I can de-escalate drama on LW. This site rocks.)
I'll concede that the previous discussions were insufficient. Let's make this place the "one and done" thread.
Do you accept that singling out cryonics is rather unfair, not as opposed to all spending, but as opposed to other Far expenses? To do this right we have to look at "How heroic should my sacrifices be?" in general; if we conclude cryonics is not worth the cost in circumstances X we should conclude the same thing about, say, end-of-life treatments.
I've tried to capture my intuitions about sacrificing a life to save several; here are the criteria that seem relevant:
Note knock-on effects: If someone hears of the Resistance, and is inspired to give their life to a cause, I'm happy. (If the cause is Al-Qaeda, they've made a mistake, but an unrelated one.) If someone hears of people practicing Really Extreme Altruism and are driven to suicide as a result, I'm sad. Refusing cryonics strikes me as closer to the latter.
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: