Late to the party.
I am 62, I still ski at a fairly high level (at least in my mind) but I do it a little slower for fewer hours and lower mileage and I ski with less abandon and more caution. That said, I still seek out tougher lines and trails. Staying in shape is key. Hoping to keep going into my 80's and will probably, hopefully at some point just be la-de-da-ing down blue groomers and will still be enjoying being a skier.
Many posts ago someone mentioned some advice about not skiing a slope that looks great but no one is skiing it. At one time that would have been a personal challenge to me and would draw me like a magnet. I have encountered some truly challenging conditions on runs like that and it has made me a better skier. However, when I pay attention to my aging body it tells me, better not. At my age I don't always pay attention and if I feel I can rise to the challenge that is calling me I will still answer.
Ask me again in 10.