1) I was much like you. My performance in college suffered as I couldn't rouse in the morning. I recently discovered I actually did have a medical problem affecting sleep quality (partially obstructed airway from childhood injury). Can't help but wonder how things would be different if I'd figured it out sooner.

2) Had a kid, and sleeping in late is simply no longer an option. Which makes me think that despite how I covet late nights and sleeping in, it really was never the natural order of things, at least for adults.