I remember reading an article in one of hte outdoor publications that spoke about phases in a hunters pursuit of game.  I don't remember the ages but basically were 4 phases if I recall, maybe someone else remembers this article too.  Anyway, first phase was all about limiting no matter how, as you aged, next phase was freezer filler, aged a bit more it was less about limiting and more about time in the field with your hunting partner and friend and last stage was not caring at all about limits and all about the experience and being happy you can still enjoy it.  Readers Digest version here.  I do it for the dogs that I have trained since i get them at 7 weeks and get great satisfaction seeing them in the field.  Do I get frustrated when I can't hit the broadside of the barn, sure do, but the memories of a dogs first point, retrieve, backing, etc outweigh all my misses.  Fun to see some dogs mature and become quality hunters at a very young age while others are slower learners.  However, at the end of the day/hunt they are happy and ready for more time in the field.  My main hunting partner was my dad until he felt he wasn't able to walk the fields with me so no it is primarily just me and my dogs.