Can people please stop saying that spaying/neutering is immoral?

Ive seen several pyo cases these past few weeks, which is easily a preventable disease. Even my sisters cat just had pyo, setting my sister back over 2 grand. Meanwhile, I keep seeing people online trying to say that it's abusive to spay or neuter your pets, all with reasons pulled out of their ass. People are letting their animals get horrible painful diseases all because they wanna ride some nonexistent high horse. There are so many actual issues in the animal world, and people wanna get mad about one of the most basic and necessary procedures there is. It's pissing me off to no end.