The problem of the Schiavo's case is that it is a classic case of "ignoramus et ignorabimus" (we do not know and we will never know) - and that US-sers as the people are simply unprepared to deal with such open-ended mysteries without a closure.
The US-ers have been conditioned, by their infantile religion, mooovie industry, and exhibitionist reality-show tee-vee, that everything is either right or wrong, every problem can be babbled about and solved as long as there is a will to attack it head on. They have been conditioned that earnest devotion and sincere faith suffice to solve all life and death mysteries.
The problem with that naïve faith is that life is full of problems that cannot be solved by sincere devotion cum knowledge and technology. Ms Schiavo's is a classic example. We do not know and will never know what her wishes were or if she had any after she became incapacitated. Ignoramus et ignorabimus. We can only speculate, and any speculation is as good as any other. We can believe her parents, because parents are supposed to love their children, or we can believe her husband because what would his motive to refuse let this thing go other than fulfilling his wife's wishes (he already got his insurance money and any court would grant him a divorce). But the bottom line is that we do not know and we will never know, and that makes a lot of people uneasy.
That anxiety creates a perfect opportunity for moral entrepreneurs, "mountebanks" (as HL Mencken would say it), and kindred moralizing scum telling people what to think, to cash in. A single individual tragedy with no solution has been transformed into "the case of ____" - the case of right to die, the case of parental rights, the case of right to life, the case of care for the disabled, the case of government intervention, and so on.
The only civilized thing one can say in this case is that there is nothing that can be said with any semblance of veracity or done about it, so let's just honor the victim and remain silent.
Wojtek