I disagree, I absolutely believe domestication has a big part in how well an animal does in a home setting. That was the whole purpose of domestication. We can keep a dog much easier and happier with us than a wolf, because they are a domesticated species. Horses are easier to keep than zebras. Cats are easier than cougars. I used to know all the "points" or factors that make animals a good domestication candidate, as not all animals fit, but I sadly don't remember - but the whole purpose of domesticating anything is to make it a good household animal, make it easier to keep around. captive bred does not necessarily mean domesticated, not at all. A captive bred lion in the zoo may be tame, but they are by no means domesticated.
I 100% agree that regardless of animal, regardless of 'domestication' status or not, people should look into the needs and care of an animal before buying. Sadly, many people don't, and with the exotic species it's harder for a clueless idiot to keep them happy and healthy than a more traditional pet. Many people can get a dog with no prior knowledge and keep it just fine, but lots of the exotics have more refined and special needs that don't get met.
I sure do wish, though, that people would stop buying animals on impusle. It kills me to look at animals on Craigslist.Take the time to research, don't just go snap up an animal. There should be a test you have to take and pass before buying animals, I think.