So you never really retire, you are just getting some time off for the family, but two parents are not needed to be constantly in the life of a child, so you can really continue to "work" (as per doing something for the society) but giving priority to the family.

I get what you say, I just don't like the idea that people get with the work your ass of and then live as a rent-seeker.
I know you do not mean it like that, but this is what the normal people understand. 

 Personally all of my work is cognitive and it never ends. As an investor I’m always trying to understand things better, model the world more effectively, forecast trends etc… working for other people was just getting in the way of that. So when I no longer had to anymore I stopped. I still do the same mental work.