An what if the native cats are the same as the house cats? Are you still saying its better to just not have a cat at all? Even if your own cat is spayed and neutered, its better to keep it trapped inside a house all day?
Humans fucked up, over a few thousand years ago. I don't understand why you think cats shout suffer today, for a mistake we made 1000s of years ago.
Also id like to point out that I agree with you. When it comes to America, or other countries where we can still correct our mistake. Picking on a country where its the societal norm doesn't seem like the right place to start.
I am also terrified of spiders. It helps to pretend that there are no spiders where your hands are, and thats just insulation and dust... not spider webs... yep yep yep!