I think we live in a more humane world but then I hear these horrible stories about cruel ways of abandoning animals. It doesn't take much to take a dog to an animal shelter.
Years ago, we had a dog which grew bigger than we had the room for him, and we realized that we could not keep him. We put an ad in our local newspaper and found someone who could take our dog. He owned several acres of property and wanted a dog that he can take for walks on his property. Our dog needed more space than we could provide for him, so we knew our dog would be happier with this person than with us. It really isn't that difficult to find new, good homes for pets.