Being a senior diver myself, I believe honestly evaluating your current diving capabilities as they diminish with age is one of the hardest things to do.Reading this makes me a bit sad. I think that when the time comes, I will throttle down gently, over time--you know, return to diving very simple gear (e.g., small cylinder on a plastic backpack), shallow, local, rather than quit cold turkey. Snorkeling, but with a scuba cylinder.
rx7diver
Four years ago, Alert Diver published an article titled something like "Guidelines for Senior Divers." In it, the author gave enough clues to make me understand that he and I were within months of being the same age. He said that in view of his age, he limited his depths to a maximum of 80 feet for a maximum of 40 minutes. I wrote to Alert Diver immediately, telling them I was the same age as the author, and on the day I read the article, I had dived to 276 feet (IIRC) for about 2 hours total. I asked what they would have done if I had submitted an article with that same title and recommended the dive profile I had done that day as a guideline for limits for people of that age.
They published my letter and gave an interesting reply. They said that guidelines are up to the individual diver. In other words, they said that "despite the fact that we just published an article promising guidelines for senior divers, there is no such thing as guidelines for senior divers."
That was four years ago. How much have I changed in those years? Should I be cutting back? As Alert Diver told me, my guidelines are up to me, and it is hard to make an honest determination.