It's on the Sea World forum. I've said this before, but here's my $.02
I love animals and get the "Born Free" thing. But I doubt I'd have loved animals (and certainly not killer whales) if I'd had no exposure to them. I think it is wonderful that we are lucky enough to have been able to see all these animals. If it weren't for zoos and aquariums, we wouldn't be able to do that. The zoos serve a worthwhile purpose.
I realize this means the animals don't live free, which pulls at the heart strings a little. However, I think it's okay for us to keep a few in captivity so that we know what they look like in person (or in animal, lol.). Zoos educate us about animals, which leads to caring for them.
Sea World always takes in aquatic animals that are in trouble. They rehab and release them, if possible. If they can't release them, they hang on to them. I have yet to hear that the documentary people have set up aquariums, hired vets and taken care of animals in trouble. Please let me know if they have.
Finally, it's just selfish. I want to see the animals - how they walk, how they turn their heads, etc. I cannot wait to see pandas in person.
Sea World is also my favorite of the Orlando parks. It's so pretty and there is so much to see and do there. If I could only keep one AP, it would be for Sea World. Love it there!