Personally I value my "work". That is not to say I value my efforts for my employer which makes this hard to explain.

I do not find value is laying around, vacationing, sports, or any other traditional "leisure" activity. I like to work

So even when I am not "working" for pay for my employer, I am still working. I am going a personal coding project, or working on my home, or working on my car, or working in some other way.

I work... weather it is for pay, for my own personal pleasure.

I am willing to bet, that if you met many of these people in the 40's and 50;'s (where I am today) they would have the same statements.

I too sometimes regret I am not closer with family, or have more "friends" but at the same time I do not have the desire to change that reality at all...

It is complex psychological problem for me I have always since my teens been a "loner", I do not have the mental stamina to be around people for long periods of time. Once of the reasons I would attracted to computer programming, even when working in a "team" you work alone for large periods of time.

To be clear I am not really a introvert or rather I am both an introvert and an extrovert when the situation requires it, I can carry a conversion, I can be "the life the room" but I find it mentally draining and exhausting to the point where if I am at a conference for example, I need a few days completely alone after to decompress.

So sure I sometimes regret that was not born with the mental gift of being able form these close continual bonds with people... but at the same time I dont have the desire to change that element of myself... if that makes any sense at all.

That's not working, that's having hobbies (and it's a good thing)