The selfish part I miss and won't admit
Before kids I was about me. My schedule, my interests, my money, my time. It was amazing honestly. Now everything is about them and I love them so much it hurts. But sometimes at like 2am when I'm up with a sick kid I think about those old days and miss them for like 5 seconds. Then the kid feels better and I feel like garbage for even thinking it. I don't tell anyone that part.
This is real. The spontaneity was incredible. Now everything requires planning and coordination. But honestly after a few years you build new rhythms and find freedom in different ways. Pancake Sundays hit different now than sleeping in used to, if that makes sense.