Wrong. Catholic priests all over Germany (and certainly other places too) have told their communities to consider articulating what's called a "Patientenverfügung" in German (basically a document like a last will, just that it documents what procedures you want or don't want to be performed upon you should you ever come into a situation like brain death, wake coma, temporary death, and so on -- a bit like that "No Blood Transfer" thingy fundamentalist Jehova's Wittnesses have). They weren't exactly happy with the idea of humans deciding over the life and death of other humans.
I think those "religious conservatists" didn't like the idea of humans taking the "life" of Shiavo by the decision of another human (even if he was legally permitted so). I also think they didn't fully agree with the idea of a human having to lead a prolonged "life" in a state of unconciousness that with no realistic chance of recovery if it might have been against their will to be brought back to end up in such a situation in the first place.
I think that those people don't agree with the idea of humans deciding on the death OR life of another humans.
It is logical that life should be preserved (or re-established) whenever possible, but the will of the individual should be respected. If they don't feel they could die with dignity while depending on machines to keep their BODY alive for decades after their mind has effectively shut down for good, then that should, in my opinion, be respected.
In my opinion it's part of the human rights -- personal freedom goes as far as it can without affecting the freedom of other persons. Doctors should do anything they can to save human life, but noone can be forced to be "saved" if it is their written will not to be. That's freedom of choice and has to be respected.
The tragedy of the Shiavo case is that her true opinion wasn't known and neither party could be trusted. The parents wouldn't have agreed with letting her daughter go even if it WAS her written opinion and the husband might have had financial reasons to falsely state it as her spoken will.
In that case, however, there are laws that tell people how the situation should be solved and law has given the husband right. Although apparently it wasn't legally possible to give her a painless death, it is unlikely she felt anything.
It was legal. It wasn't exactly the most humane way to solve it, but it was a perfectly legal one. I don't agree with what happend, but I only think that means the laws should be revised (in my opinion towards a solution that involves a guaranteed PAINLESS death even within the possibility of the "patient" still being capable of feeling things), not that those who made the decisions should be lynched for acting within the laws.
Even if the husband exploited the laws, the laws let him. In that case it'd be the laws that failed, therefore the laws should be revised. Even a criminal cannot be pursued for crimes he committed before the actions were defined as crime per law. That's the difference between a constitutional state and arbitrariness.