I see you most definitely do not live in Texas, I, however, do live in Texas.
In Texas - ANYONE can own an African Lion, or a Siberian Tiger - so forth, and so on.
I don't want to keep you wondering about my opinion - I think the laws in my home state that allow for these things are completely obscene.
But so far as the original question goes, NO. No I think and I know that Zoos do some good work.
Yeah, I've been to some zoos and been very saddened by seeing some animals that looked like they were prisoners, and rather unhappy. Thing is, if we have something on the verge of extinction in a zoo - we can at least keep the species around, and get it re-introduced into the wild sooner or later.
What I think ...no, what I KNOW is archaic, cruel, and altogether backwards are these damned circuses where various and sundry animals are abused in order to be forced to amuse us. That is where the real wrongs are.