I'm sick of the rescue/breeder being pitted against each other. I'm sick of rescues spouting that if you buy from a (responsible) breeder, you are killing another dog in a shelter. I'm sick of people that go through breeders spouting that they're dog is more worthy/more valuable than a rescue dog. A life is a life. What makes one more valuable than the other?
People that just cycle through pets. Also, their friends/SOs that very obviously must see the problem and decide to save feelings instead of saying something.
People that can't afford the pets they have, so they are living without needed vet care, and then get another dog. And their friends that say nothing other than "yay! new pet!" because that's easier than somebody getting butthurt. Then somebody being surprised when the new pet needs vet care and isn't getting it to the extent needed, because now they have another pet and more expenses than before, when they couldn't afford the vet care.
People that complain about the prices of vets, and spew that they are just in it for the money. Just, no.
I can't look at a cropped dog, because I just... see it as deformed. That said, I'm not for taking away the choice.
People who talk down to other people who made the decision to alter their dog. Keeping a dog intact is not for everybody. The idea that the only way you can care about the health of your pet is to keep it intact. Altering doesn't mean you don't care. It just means you don't want to deal with intact dog/have health concerns with keeping as such. Informed decisions, whichever way you choose, is never bad.
ETA: People that sit back and do nothing with the issue but then complain about how they don't like how a rescue works. **** right I have certain needs for adopters -- I've loved this pet as my own, and I'm going to make sure no pain comes to it. Don't like it? That's your own problem.
ETA2: While I'm at it, rescues that claim to take special interest in one breed, then just spread misinformation about that breed.