I guess your son is much nicer to have around than I was for my parents, and I was the last of the kids at home. My siblings moved out about 6 years before me since they are older. I remember when I moved away to go to college at 18 years old, my folks were quite happy. They even quit smoking, lost weight, and started to do more fun activities. But my parents were a little different than other parents. Not that they were bad or anything.