That Vet never should have said that to you, even if that is how he truly feels. That was cold and inconsiderate. I am really shocked and appalled at this mans behavior, whether he was stressed and busy or not.
My little Bichon dog, Buddy is starting to get cataracts in his eyes. Our vet told us it is common to his breed but that these little guys adapt very well. I could not for the life of me fathom having him PTS because he loses his sight...or a limb or whatever. As long as they are not in pain and have a good home they deserve a life like any other pet.

We love you Magoo! Don't listen to the grumpy old white coat.
Take your meds and hey, no more bunny kicks to Momma!