Earlier quoted context omitted.
Why would anyone do that, then?
Because, and you may not know this, some people have standards they live by. They like "nice things". And there's large groups of them that feel this way and want to ensure they don't attract an antisocial person that has different values. I feel like people have this really funny idea that everyone should accept them and respect them for exactly who they are and that people should respect whatever it is they want to…
I would pay good money to avoid living near people like that, and indeed I do.