Age well I had to stop before I was 40, just to sick to ride. My wife told me to sell my bikes because I would never ride again, well I proved her wrong, 5 years later I was going again. I've restricted myself to a radius I feel safe doing, which is about 30 miles or so, but I always feel ok on my bike and on the odd days I'm feeling really bad I just don't ride, but then I can't do anything very much at all on those days. That's how I'll be carrying on anyway, and I'm aiming to go on until my health finally breaks down totally or something else gets me. 10 years more or less until retirement, unless they move the goalposts again, and I hope I'll carry on riding after that.