Good for you!
It really hacks me off the way people think they can just say whatever they think with no thought as to whether they are offending or hurting someone.

My little bichon, Buddy is in the early stages of losing his sight. His eyes are starting to cloud. I believe I would show them the door just as you did. He is part of our family. This is his home and if someone can't look at him...well, no one is holding them hostage...beat it!

Mooch looks like a little angel to me- that person is the one that is truly blind.