During the holidays my sister and I watched the documentary Blackfish about orcas in captivity. It was an extremely interesting, well done, and tragically sad documentary. I admit that I did go to Sea World as a kid a few times, but I would never be able to go as an adult now that I fully understand what it means to keep orcas in captivity for human entertainment. While I understand that there are some educational benefits, I think the main problem with orcas is that they are just such large and social creatures, it's hard to provide a suitable environment in captivity.
Afterwards, as my sister and I sat dazed in a post-documentary and -wine-and-chips-binge (yeah, we're classy like that), she asked whether we're kinda doing the same thing with dogs. I looked over at my snoring pugs, happily draped over our laps, and answered that while that may have been the case early on in the domestication of dogs, I seriously don't think our dogs could survive or be happy in the wild now. Pugs especially have been bred to be companion dogs. But it definitely made us think about how we interact with animals both as pets and as wild creatures.
If you haven't seen it already, I highly recommend watching it.
P.S. I know lots of people successfully have crate trained their dogs, but I generally let mine roam free in most of my apartment while I'm gone. It's just a personal preference and the girls rarely cause any trouble or messes (knock on wood! Watch now I'm going to go home to some sort of disaster today). The only time they're in there with the door closed is when I have maintenance workers in my apartment or if we're traveling in someone else's car.