Well, Duet.....I left home at 17 never to go back...but my bro' did stay at home past 18. I remember one time when I was visiting and he came rolling in at something like 7 in the morning. My dad was sitting at the table waiting for him. With that SERIOUS look on his face. The law of the land became that you will not worry us and cause us to sit up all night wondering if you are dead in a ditch. You will call and tell us if you are going to be out late, where you are and when you will be home. And he didn't get to just go to bed. Dad put him to work. I dont' think he ever did it again, either.
My son was pretty considerate. He would go out with friends on weekends....17 but the one night he didn't come home until 5 am...there was mom, sitting up worried sick and when I told him that all night I had wondered where he was dead in a ditch and where to drive around and look for him, and cried, cause I was that exhausted and scared. And then he still had to go to work at 6 am, but he all ready knew he had to do that...he worked on weekends. Well, it never happened again.
My dad's favorite trick about us not getting up at first call was to say I guess you need more sleep and bump the curfew to earlier. Every teen hates that! So we got up all right!
Love and discipline go together, it isn't harsh, authoritarian etc.
It is respect and cooperation.
I always told my kids...this isn't a democracy...it is a benovolent dictatorship LOL