Yep, it took me a little while to realise and appreciate it, but you're right. Now my son is a little older he wants to do things with me too, and that would be horrible to miss because I'm stuck in front of a computer instead.

I don't know where you work but as others have said - if you have a commute that's also valuable time you can use. I used to burn all of it on Netflix, but have recently started reading about stuff I want to learn/get better at.