What happens to these people usually starts out with people abandoning animals and these people take them in and it gets too much for spaying and nuetering and it just gets out of hand. Poor kitties.
I am a firm believer that when you accept an animal into your home they must become a member of the family. They must be loved and cared for and not be subjected to harmful/disgusting living conditions.
My parrot, Buddy and cockatiel, Kiwi are looking over my shoulder as I type this. :0)