Also note that, if you are a cryonics subscriber, deciding when and where to legally die is likely to increase the odds and reduce the cost of an optimal preservation procedure being used. Subject to the usual caveats, of course. Still beats starving yourself to death.
Makes paying for cryopreservation via life insurance rather difficult however.
Over at Scott Adams' Blog you can find a very fine example of using the 'Rationality Engine' to solve the social problem of assisted dying.