In my opinion if you are retired and bored or not feeling relevant then you are not applying yourself ! There is soooo much out there to do that doesn't cost an arm and a leg . Get yourself a daily exercise regimen as an example . Walk a mile or two every day with your wife or friend or another family member . Volunteer at a local shelter/food bank or volunteer to mentor youngsters . Volunteer at the local SPCA these are just a few examples there are literally thousands of opportunities out there .
There are a LOT of us that have a vast array of life experiences that can be shared with others , why take it to the grave with you ? If you want to be that grumpy old bastard with the stay off my lawn attitude then you have no one else to blame but the man in the mirror ! You worked 30 ......40 ....... 50 years to finally enjoy retirement so go enjoy it ! There are random days that I just molt on the couch but those are rare , instead I keep busy working around the house on projects/improvements . There's always a vehicle needing some maintenance .
My wife and I randomly just go on a day trip to local towns near us , it's amazing how fun it can be to just walk around a town square , visit local shops , eat a sandwich at a local deli and just see new people . We spend as much time with family/grandchildren as we can we have very full lives . If I ever get the restoration of our camper done
we will start exploring this great land we live in .
There was a MASH episode where the Army shrink had a statement that was something like " if you want to have fun then take my advice , pull down your pants and slide on the ice " . Go have some fun folks
and don't lose that inner child .