I see this too and I do not have a good answer. I think a lot of people have good intentions but have not done enough research about how to handle a dog, the time it takes to train and control a dog and the best dog for your household.
When I was very young, about 8, I had an uncle, without checking with my parents gave me a six month old German Shepard. By that age, the dog is full grown physically but still has puppy behavior. I had said I had wanted one, because I watch reruns of Rin Tin Tin every day. It was not the right dog for our house, we really could not afford the upkeep and we had to chain him up a lot because we did not have a fenced yard.
As an adult, I have had several dogs--right now I have three Beagles. We use the crate system when we have to be gone for several hours. They do not seem to mind.