Surgery requires a lot more skill then giving someone a lethal dose of something.
There no need to argue for slippery slope, it's quite possible to write laws that allow doctors euthanasia but make clear that they are not forced to do so.
It's also possible to right laws that allow for gay "marriage", but don't force, say bakers, to bake cakes for gay weddings. The way things actually play out suggests this isn't actually possible in practice.
Also I have a question. Do you actually not want doctors forced to perform euthanasia or are you just trying to alley my concerns? If the latter, you are being disingenuous. If the former, why did you reply to me but not to Jiro?
It's also possible to right laws that allow for gay "marriage", but don't force, say bakers, to bake cakes for gay weddings. The way things actually play out suggests this isn't actually possible in practice.
"In one of a dozen or so countries where X was done, Y also happened" isn't even terribly strong evidence for "it's not possible in practice to do X without Y also happening", let alone "it's not possible in practice to do anything in some reference class including X without something in some reference class includ...
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.