I've often wondered whether the divide is between the young and the not-so-young -- not necessarily senior citizens, but old enough to have been around the block a bit. Certainly those who have had experience with aging parents or grandparents tend to be more realistic.
Unfortunately, some aging parents are being made to feel they are "burdens."
Devaluing life in one group devalues it in all groups.
Playing God, by killing those with "poor quality of life" is the ultimate slippery slope.
I'm a nurse, and I'm not so young. I recently lost my mother, and she did stop eating several days before her death; but she did take water up until the time she became comatose.
We have sent home severely brain damaged babies with feeding tubes, and their parents lovingly take care of them.
You two demonstrate an incredible degree of valor in confronting the MS crowd. ;-)