Choose actions to minimize future regret.

Yes, it's a Dad-ism, but it applies to Dads too.

Your kids will be grown and gone before you know it. Really.

When you spend all day working and testing what amounts to a reminition machine (see my profile), poring over images of your kids when they were little, and your role in their life was outsized, I guarantee you won't regret the time you spent with them.

I took mass transit for my commute, and that, and when the family was asleep, was my time to learn.