Staying busy is good for you as you age.
These days we are burning through 4 trips a year, and while we're going to keep up that pace for a while, we are finding that it may not be easy to maintain for too much longer - though admittedly some of our trips are heavy on "adventure" (occasionally demanding) and not so much just easy sightseeing in big cities. At the end of a long trip (for us, trips vary between 12 - 28 days), we are glad to get home and need some time to recover. Case in point, we recently concluded a fairly intense (physically demanding) trip to Iceland in July. I got quite sick right after getting home, so I'm just now getting back to something like full strength - and we leave for Greece in just 3 weeks, our travel gear is still spread out all over our living spaces - plus I'm more than busy trying to wrap up or fill out plans for the next 4 trips (I need to book flights to Bali later this week). The planning helps keep me mentally sharp (like a good, complex game) and keeps me out of other trouble.
Last year we did Mexico, Shetland, Easter Island & Chile, Puglia & Budapest.
In 2026, so far we've done Philippines (a SCUBA diving trip) & Thailand, and Iceland; still coming up next month some Greek islands, and in November Tohoku (a region in the north of Honshu, Japan's main island) for 2 weeks of leaf peeping.
In 2027 we've committed to (and booked) Egypt, Peru, Indonesia (a dive live-aboard to Komodo, with a few days in Bali as a bonus), and a longer trip New Zealand to round out the year.
In 2028 we're tentatively planning Uzbekistan, some Indian Ocean islands (Mauritius & Reunion), Northern Italy, and possibly Cape Verde in the winter.
For 2029 and beyond we've got a bunch of sticky-notes on a calendar, but nothing written in ink or etched in stone yet.
So we are certainly keeping busy. We definitely do have some bucket-list items mixed in there (our buckets have some unconventional choices, but also some popular ones) along with less well-known, occasionally obscure destinations. We are able to manage all this with the help of a lot of frequent flyer points (we use them to get almost everywhere, plus some can be used for hotel stays...this helps a LOT). I'm pretty much our full-time travel planner now (my wife refers to me as her travel agent).
As we age we are trying to hit some of the more physically demanding adventures sooner rather than later (climbing things like volcanoes in Iceland, ruins and mountains in Peru, SCUBA diving where conditions are more challenging, etc.). We have not been limited yet by mobility challenges but if we keep up this pace I can see that coming (wife is starting to grumble about 4 adventures a year might be too much, maybe we'll just do 3 in 2028....but then she keeps giving me assignments to figure out...what's that? Humpbacks in Réunion? Sure, honey. Lemurs in Madagascar? OK. French Polynesia? Um...alright. The Dolomites without crowds? Hmmm. I'll put that on the list and get back to you...).
You never know when the next pandemic or major war will roll downhill. You can't take it with you, so do it now or soon, as you can figure out how to make it survivable. Boom.