I had a talk with a no zoo, sometime ago. This reminds me a little bit about it. He said:" As long the Animal is not hurt and or forced, I can't say that it's sick and should be banded. A specially that, I'm eating meet and other animal products."
Bad zoos should be punished, but it's not all zoos abuse and hurt animals, to say it should stay banned, then animal ownership has to be banned, to stop animal getting hurt. Non zoos are bad for animals too!