The question regarding retirement, as I see it. Does one HAVE TO go to work or does one GET TO go to work? Those that go to work because they have to go to work certainly look forward to the day they can say goodbye to their job.
Finding a hobby isn't something to “fit it” once the kids leave home or you retire. It's crucial you have one TODAY to decrease stress and increase joy. But first—let's get clear on what it's NOT and the one trap you MUST avoid.
There is only one thing that recent studies have shown helps resolve (or significantly reduce) arthritis pain. It doesn't involve taking a pill. It doesn't matter how severe your pain is. And the age of onset is irrelevant.