Maybe ambitious is not the right word. It's more like, at some point you have to go home.

Before my kids, I started at sunrise, and coming home was optional. Then I got married and divided my attention. Then I got twins, so I divided it even more. But it doesn't make me any less ambitious, in fact, I have more fire behind me to ensure I give them a bright future. It's just that, I come home on time now.

Edit: and thank you for writing this post. It's rarely something we mention in our personal blogs, but it's always nice to know how diverse this culture is.