It is a horribly sad reality. I always hope those animals get a good home.
I had this horrible woman euthanize her dog this week because she had to move and her new place wouldn't let her have large dogs. I offered her a handful of rescues to try, she declined all my offers. She said it was more humane to euth, than to send it to a rescue. She asked me if people do this often and I told her "no, not really". She proceded to tell me that I was a horrible person for making her feel quilty. All I really wanted to do was tell her to shove it.