Stephen Gorden posts an interesting commentary in the form of short fiction at the Speculist.
Of course, I'm far more cynical than Stephen. I think that those who protest the loudest are often the most tempted and the heaviest users. I don't think that it'll take any external prompting at all for Leon Kass to keep up with the vanguard of healthy life extension medicine as it becomes available, no matter how hard he rails against it now.
The human desire for survival is strong, and few people are capable of suicide through refusal to accept available medical care. That just makes those who campaign to block medical progress even more immoral, unethical and hypocritical in the long run.
We should all remember that of every 100 politicians and bioethicists who are trying to turn back the clock and demand a halt to stem cell research, 99 will be lining up in years to come for the regenerative medicine that they worked so hard to delay.