DH and I are readers. We are both introverted nerds and happily spend our evenings reading. It's a rare night when we go to bed before midnight because we're too wrapped up in our respective novels.
When I was a kid, I frequently did the whole flashlight-under-the-covers thing so I could keep reading long after my parents said goodnight.
The other night, I caught my almost-five-year-old Boy Child with his bedroom light on, sitting in the middle of his room, reading.
Two hours past his bedtime.
I have a lot to teach him about being stealthy.