Philospophy is something that is nice to think about.
I don't know about Terri, but ten years on life-support seems to me like long enough, I wouldn't want it. That's not so say that she doesn't.
Cutting her off food does seem cruel.
I'm going to give you the benefit of the doubt and magnanimously grant that you are simply uninformed about Terri's case. At least 5 people have tried to correct your misunderstanding of Terri being on "life support", but yet you persist in promulgating this misunderstanding.
I am a medical professional, so I will try to explain in simple terms Terri's so-called "life support". You eat and drink food and liquids through your mouth. From your mouth they go into a tube (your esophagus) down to your stomach. Terri's "life support" simply bypasses her mouth and esphagus by inserting a tube (think faux esophagus) through her abdomen directly into the top section of her stomach. Someone has to mix up the food and put it into the tube, but that is the extent of Terri's "life support" for nutrition. Terri's brain works well enough for her to breath on her own, regulate her temperature on her own, regulate her heartbeat on her own - there are no machines helping her to live (unless you count the blender to puree the food and liquids).
Terri is not "using up" resources that could go toward someone else. She is currently warehoused by her unloving, unfaithful HINO (husband in name only) in a Hospice facility. She has parents who want to take her home and take care of her for the rest of her natural life. I encourage you to think carefully about the potential impact of your seemingly careless philosophy toward life. What if someday a god-judge determined that you were "using up" too much food or oxygen?
PLEASE! Go to Terri's Fight website and spend about 15 minutes reading up on her case. Also, view the videos of Terri available there. Then come back and discuss.
Have a good night.