It is interesting how things have involved. When I started my career the Megacorp location I worked at hired about 30 folks out of college over a 4 year span, and we did a lot of socializing after work (various corporate sports leagues, skiing trips, local community work, etc.). Most us lived within 20 minutes of each other, and since most were knew to the area, making friends through work (directly with co-workers or friends of the co-workers) seemed normal.
As folks got older, marriages, family, and moves started to break things up. With kids we tended to spend more time in community activities for them, so over the years, along with a few moves, our social circle migrated from work to more community friends.
Now, in our "older" age, we have been getting back in touch with folks from our childhood and college, rekindling some of those friendships. These are more "scattered" as they are all over the place, but it is nice to go to an area for business/vacation and spending some of the time socializing with them. Or, if they come visit our area they will spend some time with us. More and more of the folks I knew at work have left and gotten out of touch, or sadly, died. In addition, now that I'm working from home more, work socializing rarely happens. I think, when I do go into the office, I've gone out to lunch with folks maybe 4 times this year. Forget about anything after work.
So I'm not too concerned about losing work social contact, but have worked to replace it with my current interests and hobbies. And as long as DW and I stay best friends, that will also help.