Interesting thread.
Nearly a quarter century of retirement and I've gone through many changes in my approach to friendship.
Early on, most of my "w*rking friends were still engaged and did not live nearby ( greater Chicago), plus, we moved.
Since then, it's been an up and down thing. Living in an active retirement community meant being friends with just about all 400+ people. Seeing them every day, makes friendships easy. Partying and playing together makes for great familiarity.
As for old friends... after age 70, maintaining contact became more difficult, and so, other than an occasional phone call, very little closeness. Visiting and corresponding the early years 53 to 65 was very common, but we consciously drew away as we found staying in touch to be too difficult. Despite having been close in the past, after we bought in Florida, vacation "visitors" became an interruption to our life, and we discouraged this, except for lunch or an afternoon visit. We learned a lesson after some previous friends came to visit, and stayed too long.
Now, heading toward the big eight-oh we both do things on our own terms... picking and choosing what and when. The freedom that comes from independence trumps friendship obligations. Friendship is now a different animal... Casual, passing, and happy for the moment.
Our family visits are perfect and while we are "lovingly" close, that does not extend to living in each other's lives.
Another factor that has influenced our life is moving. We have moved 23 times since 1958. Counting neighbors and friends over the years, is a taxing proposition. Even recalling names becomes an effort.
Last month our high school class had a 60th reunion. We went to the 50th, but not this time. As we received a recap of those attending... 40 out of 160 graduates, it was interesting to see that 27 of the 40 were still living in or near our old home town.
I'd be interested in knowing how others have handled friendships in a "moving" society. How many moves, how many "new" social circles, how many new sets of friends?