As others hinted https://wanna-joke.com/parents-after-a-long-weekend/ is what just about every single parent will confirm.

And to expand on also hinted growth of skills. Having kids - gives one abundance of opportunity to practice growing others.

Obviously you won't be around your kids all the time, nor be there for them forever. So after initial "micromanagement" phase with babies. With toddlers and older you start switching towards mentoring and coaching.

Which overlaps (not specific things, but concepts) with managers/leaders growing employees.