There is only one thing I truly miss about the "pre-kid" days. Sleep. I am not a morning person. I can't drink caffeine, so there's nothing to give me that extra edge in the morning. (I do like to think that if I could drink coffee I might actually be more motivated to get out of bed in the morning). I am not a night owl, either. I start to decompress by 7 pm-ish. I like to be in bed by 10 pm or close to it. Working two nights a week until 10 pm or midnight does not help me. Ideally, I need 8-9 solid hours of sleep. Like that's going to happen. On the nights I work, I'm lucky to clock 5 1/2 to 6 solid hours of sleep.
Before kids, Hubby and I worked opposite schedules. This made weekends glorious... at least when it came to sleep. He usually worked Saturday mornings and I was off... so I could sleep until my little heart was content.
My daughters are up at the crack of dawn. No, that's a lie. They're usually up before the crack of dawn. It doesn't matter what time they go to bed. For them, 6:30 am is sleeping in. I've tried everything I can think of: heavy curtains, staying up late when there's no school the next day, wearing them out with walks, bike rides, etc. All this does is make them well-rested and ready to jump out of bed the next morning.
When I was a teenager I slept in on the weekends. I always wondered why my parents were up so early when they didn't have to be. My mom claimed it was because she got used to getting up early when I was younger. I believed her... until now. As soon as my daughters understand (and act upon) the joy of sleeping in, you better not call my house too early because no one will answer.