I'll go back to my dog example.
Dogs maim and kill mostly young children. To the tune of millions a year in liabilities. (Lots of trial lawyer links with google for stats.)
But young children die, so why do you need dog.
Oh, but my dog is different, you say. Well, owning a dog contributes to the dog culture. By merely owning a dog you make it easier for irresponsible dog owners to leave loaded dogs near children.
So by banning dogs we can save lives and millions p dollars worth of years destruction.
Police and military could still have dogs. They're trained to handle dogs.
But you're little FiFi is a menace to society and needs to be put down.
Sorry. It's for the children.