6. Domesticated Cats
As cute and fluffy as they are, they are one of the most evil, vicious and cruel sadistic hunters out there, that will kill anything for 'sport'.
Cats are the only creatures besides humans (and sharks) who will actually kill for pleasure and they make no discrimination. An Indian Mynah (another creature on my 'animals for extinction list') or a rainbow lorikeet...a mouse (that too) or a tiny opossum, it makes no difference to a cat.
Some (most) councils in Australia require domesticated cats to be either kept indoors, or locked up in a cage outside.
I always feel sorry and sad when I see those cats locked up in cages, but I fully understand why they are, and the alternative is much worse...but still, it would be better if cats just...didn't exist at all.
As sad as it is, yeah, let's make cats extinct.
Yeah, no. I like my cats better than most humans. They've treated me better than most humans have, too.
By the way, it was humans who bred the domesticated cat. Almost all your examples are the fault of humans. So you're just adding more reasons for humans to go extinct.