Interesting that you mention your friend losing interest at about the same time his daughter leaves for school. Sounds a bit like he might be questioning if dedicating all the time and energy to fishing was worth the price in terms of the inevitable sacrifices that come in other aspects of your life. I'm going through something like that myself. My son is now a teenager and it feels like I was just so one track minded with fishing (he doesn't really like fishing that much) that I sort of missed out on father son time when he was a young boy that I can never get back. I turn 50 this year and honestly I'm not sure if questioning my choices with regards to fishing aren't really just part of a mid life crisis and a natural transition phase of life. Then there's the obscene amounts of money I've spent on gear over the years, much of which just gathers dust.