I left home as my first job was a live-in one and when I left that I went home again. I moved out about a year later into a flat with my OH although we didn't actually marry until 4 years later when we bought the house I'm still in 34 years later.
My brother had a job with unsociable hours and so not much of a social life and has never married or technically left home - although he does now own his home and my parents both live with him. As for my son he can't afford to move out and still live in london on the sort of wages his job pays, but I don't mind. It's only the two of us and we each do pretty much as we please and I do have help paying the bills.

Jan