While I think that cryonics in principle could make sense, and I don't share the intuitive problems with it, in practice I belief that the changes to be resurrected in a sort-of continued existence is very, very small. In terms of life expectancy, resources spent in other ways seem to have a higher utility.
Now, I may very well be wrong (I'm certainly no expert on the latest in cryonics research), but do you think there is any realistic chance for cryonic success, given the technology of, say, the next twenty years?
I belong to the We-Have-to-Get-Off-Butts-And-Make-Cryonics-Work School, which makes the usual probability approach pretty useless. Thomas Donaldson wrote that if treat our current choices as the "seeds" of future events, then probability becomes something which we can start to control in our favor.
http://www.alcor.org/printable.cgi?fname=Library%2Fhtml%2Fprobability.html
Having been diagnosed with cancer last year, writer Christopher Hitchens has died. He was known as as an outspoken atheist, which is not, in itself, identical to being a committed rationalist in any systematic way. Even so, he seemed to have the virtue of moral courage, the willingness to speak the truth as he saw it, without fear.