I'm in my late 60s and my wife passed 10 years ago. I can sorta feel this working upon me:

1) I have two wonderful grown up sons, but they live far away and I don't see them much. I try to let them live their own lives, but sometimes I wish they were more dependent.

2) I've been in a relationship for 8 yrs, but mostly because of our kids, we live in separate houses.

3) It seems there's a "funnel of trust", where the high trust of family/friends in our youth slowly gives way to a realization that "there are few you can trust" (or perhaps the world has changed). It seems that entitlement is at an all time high, even among seniors.

4) I keep busy, workout 7 hrs/wk, do some consulting, travel, and writing.

5) I've learned to be very happy in my own world.