My first bike was in 1969 and i 've had many since. Im not fast anymore but i am smooth. Every spring i lay my bike down on the lawn and pick it up, so far. My rule is when i can't pick it up i quit. Some days i don't ride because i don't have the feel. some of my friends in their 70's and Ben at 84 only ride when it's good. There my two bits worth.