As have I sir, as have I.
I think it boils down to what each thinks is the ultimate authority. For me it is Jesus. For others it is the law, or some vague idea of situational ethics. Neither side can really understand the other, because their world view is totally different. Both can work together in some things, and will work against each other in other things.
To me, as a Christian, this is a pretty cut and dried case of Natural Law versus man's law. Terri has done nothing wrong, and is not "brain dead" (notice how that never gets brought up?). Therefore, we need to err on the side of life.
To some who don't believe in God, when they project themselves into Terri's state, they see someone trapped by a non functioning body/brain. To end that tormented (again in their view) existence is ultimately a mercy.
For those that would delete a message that dared to contain the word God I've been sending them this from Orson Scott Card:
http://www.freerepublic.com/focus/f-news/1369848/posts
Nary a mention of religion, but powerful words and logic. It's moved some people but a handful have asked me never to speak to them again. I wonder if it's from guilt but I don't discount the possibility they are convinced I'm outright crazy.
I don't discount that as a possibility, but if this be lunacy I'll take it.