Visiting friends and family (many happen to live in very interesting places) is the only time travel appeals to us now, and I agree that retiring from the rat race is one thing, but retiring from life would be extremely boring at any age.
We plan to stay involved in multiple challenging projects (film, real estate, investment, etc., etc.) as well as with kids and grandchildren for as long as we’re breathing, and most people we know feel the same.
One of our neighbors is in his late 60’s–holds multiple patents–and is still working on others. We honestly don’t know anyone who is completely “retired,” regardless of their age or financial status.