I too have friends like Jim and others that are 60 plus and still ripping it. Jim has always made me think I could be that guy. I have loved his reports over the years.
But.....I have 10x friends that are in their 50's with hip or knee or anckle relplacements. Others with back issues so bad they quit the sport altogether. I am 55 and still ski 60 days a year and mostly healthy. I atribute it to still exercising. I mountain bike in the Boston area year round and the MRV all summer. I road bike quite a bit and do the PMC every year so my fitness is pretty good. I came from sking with the freestyle crew at SR for years so my style was always bumps and trees. Beat the living shit out of myself for years. But the end is comming and I can feel it. I ski with pain every day. Not bad pain but it is there. The 60 + crew is a gifted and very luck group. I ski with them all the time and envy them. But they are most certainly the minority. I will bet that most of you guys will not be part of the 60's group still sking bumps and trees.
I guess the point is that most people retire in thier 60's and at that point there is a small minority of the overall ski population that can ski hard still so good weather, good conditions and other off mountain entertainment is more of a priority for us.
I too grew up primarily a bump and tree skier. I would pound bumps all day long and only viewed groomed terrain as a means to get to the bumps and trees.
Around age 30 I made the conscious decision to reduce the amount of bumps I skied to help preserve my body. I started mixing in about 25% of my time skiing groomers. At 40 I shifted to about 50/50.
I've actually grown to really love carving groomers and feel I'm actually improving in that aspect of my skiing. Where as with bumps and trees, I'm just trying to preserve my skills. I'll never be as good at bumps and trees as I was in my 20s. I just don't have the same athleticism as I did then. This year at age 46 I actually started racing and very much have enjoyed that experience between the beer league team I'm on and running Nastar at Gunstock.
I agree with you that people who can still rip in their 60s are a rare exception and not the norm. I actually skied with a 70 year old on Sunday who was ranked 9th in the country for his age at Nastar. Only started racing at 66 too. He ripped. Was beating me by a full second on the handful of runs we did together down the course. Very inspiring