The people in their 60s who seem to have drifted from close friendships weren't cold or indifferent — they were often the emotional anchor in every room they were ever in, and anchors, by design, don't get carried

An older man looking thoughtfully out of a sunny window.

There is a particular person you meet in their sixties who seems to have ended up with fewer close friends than you would expect. Not friendless, exactly. But the standing dinners have thinned out,...