Not even in this case. WHO are we to say who lives and who dies?
In the Netherlands last year, 22 babies were Euthanized, some because of Spinal Bifida.
But aren't we doing exactly that in this case - Saying who lives - If it were not for man's involvement (via a feeding tube) Terri would have passed on to God a long time ago.
Also, don't we judge who lives and dies via the death penalty all the time?