Some things are good, some things are bad.

Some zoos are good, where others are bad.

I've been to a mixture of both. Zoos are EXCELLENT to rehab animals or to take in animals whos lives are otherwise in danger (or for endangered animals). It just depends on which zoo you go to and how much room the zoo has! Like the zoo in Omaha, Nebraska... is HUMONGOUS... with its own ecosystems! So its not like animals just outside in weather and a climate not native to them... Omaha brought their native climate to THEM. That is a very good zoo I think!!