It's like my nephews who are continually grouchy and complaining but they stay up until 4 and 5 in the morning playing video games. Their parents do not have any rules about when or if they should be in bed. I just want to tell them, when you're my age, you'll wish you'd taken more advantage of sleep time because I can hardly sleep more than four or five hours now, and I envy anyone who gets a full night's sleep.
My nephews are older now but still stay up all night playing computer games in their parents' basement. They've never married, but one did have a job back when he was a teenager but it didnt' last long. Their whole existence is playing games on the computer.