Fully aware and taking advantage of it. A previous colleague asked me "just what are you doing with your time that you can't make time for kids?" It was very difficult not to laugh out loud. When I ran down the list of activities and projects I was working on, it looked like they had died inside a little. The response was a meek "oh... I see".
Who knows, maybe the response was an "poor guy, doesn't know what it is to be happy with kids" or "I wish I had that sort of time". Regardless, I'm enjoying my free time. Especially travelling off season and outside of the school holidays... you can definitely put a price on that.