It was wrong to capture wild animals and confine them in captivity for people to go and gawk at them. And that's basically how zoos got started. But once you do that, and once you have animals that have been bred in captivity, you're really stuck with them in some sense. You can't return them to the wild.
I feel so guilty when I see orcas performing their stupid tricks in their little swimming pools, and when I see circuses or elephant abuse. I don't want to be in the same industry with these people.
I think the discomfort that some people feel in going to the monkey cages at the zoo is a warning sign.
I became very critical of zoos and circuses and keeping animals in captivity. I wish it was against the law.
I am personally not against keeping animals at zoos, as they serve a huge educational purpose, but treating them well and with respect seems the least we could do, and with 'we' I mean not just zoo staff, but most certainly also the public.