Unfortunately there are stupid/selfish/greedy people in the world who want to have and show animals but don't know how to properly care for them nor realize the time, effort, and money it takes to KEEP healthy animals. They are willing to keep them, but not do the research to keep them healthy. Some people will let an animal get injured or die and replace it without feeling bad because it's cheaper than taking it to a vet.
PS- I do agree, if someone can't afford it then someone shouldn't have it.