It never occurred to me to fret about the things I could do at 32 and I can't do at 72. Thing is, despite some lapses, I've taken pretty good care of myself and I'm frequently mistaken for a man 10 years younger. Been away from riding for a few years up until about a year ago. So I've got some speed and endurance to recover, which means training. The goals I've set are appropriate to me, but I consider my age less of a factor than how I feel. Certainly they're more modest than the ones I had 40 years ago, but so long as I continue to see improvement in my metrics, I'll keep pushing with no concern whatsoever for who passes me or who I pass. There are always plenty of both. Just like 40 years ago...