I couldn't be bothered reading people's posts, as my eyes are tired
(I have been up since 5am!!!!!)
But, I believe it is a good thing, well, as long as
a) it is what teh person wants (like, they are sane, and aren't hopped up on drugs - that alter their state of mind)
b) the person is actually suffering (physically) and it isn't just a "I feel depressed" kind of thing
c) it is fully talked over with the family of the person before hand.