Remember when you were young and you felt like everything your parents did was unfair? I remember raging against bedtime, feeling like I'd give anything to stay up for another episode of Spongebob. I didn't understand why my parents insisted that I needed a full night's sleep. I was a kid who had energy and wanted to participate in life for as long as I felt like it. Now that I'm older I understand the power of 8 hours of rest. It really is the difference between a good day and a day where you're likely to lash out at somebody and make poor decisions.
Sure, I still rage against bedtime in my own way. The Netflix "next episode" function does get in the way of a decent night's sleep sometimes, but it's on my terms. I feel it when I stay up too late, so I finally understand where my parents were coming from. Parenting hindsight is 20/20.