Reads like the OP has boring activities at wherever they are going, spending their time. The OP didn't explain what/where//when as though she expects it is some kind of general psychological issue for some retirees when they get home from outside activities. So I can only speculate in general, critical, terse ways that may or may not apply to her personally.
What is true is many people that worked 8-5 m-f, year after year, decade after decade, never really developed much of an active leisure or social life outside their career so upon retirement are suddenly lost, wondering how to enjoy their time or engage in worthwhile activities. Many never really had much physical activity fun, with many just weekly visits to a boring gym as thought that was what society expected working people to be doing. Otherwise, their lives away from career amounted to dealing with regular domestic tasks, taking care of family/pets, going out to local restaurants, enjoying occasional theater movies, and especially watching TV for hours and hours and hours each week.
When they traveled to supposed scenic places, they experienced those places through the mechanisms of usual paid tourist services that often treat guests with elaborate lodging, wine, and dining, but otherwise are no better than someone riding in a tourist bus riding for a couple hours while stopping for 5 to 10 minutes at various spots along some route. Ho Hum. Sure some people are fine with that level of occasionally being entertained as an annual escape from their annual work life, but not so for the more active lifestyle persons that have enjoyed their lives for years.
And then as they enter middle age, their sedentary body gradually begins shutting down, from both genetics, lack of use, and being overly fed, so by time they do retire, the possible activities they might consider are considerably fewer than when they were even 40. They read there are retired people that greatly enjoy world class travel and being catered to by services offered to the wealthy.
And pragmatically conclude their earlier decades dabbling with such vacations is not something they or most others can do regularly. And that they were just not one of the lucky ones making enough money for that to be possible year long. Yeah they went to Vegas last year hoping for a big winning but that was as far from reality as were all those endless weekly tossed in trash Lottery ticket stubs.
So wonder what else is out there that is any better than just staying at home, eating supermarket home delivered food, watching the tube in their favorite cozy chair, poking at their smartphone screen, and popping the cork on wine bottles?
Peace 
