There are pros and cons of experience. A con is that you can't look at the business with a fresh pair of eyes and as objectively as if you were a new CEO. Fire yourself on a Friday night and come in on Monday morning as if a search firm put you there as a turn-around leader. Can you be objective and make the bold change?
In my experience it's all wonderful with girls until about 16. Around that time boys kind of calm down and start focusing their testosterone. Girls get a little challenging especially for fathers.
Older fatherhood isn't all bad: testosterone rates drop about 1% per year as men age making them less reactive and more patient and a professionally established middle-aged man is likely to have more time and money to devote to his kids than a twenty-something who's just getting started.