Well, of course it's a social outlet. I like being on forums with people who are similar in some way. First it was American expats, then it was boomers++. I am definitely active and have friends I see socially, but I like having senior friends especially from different countries. It's interesting to find out about growing old or just life in general in different countries. I've always been curious about different cultures.
As for comments about being on a forum while on a holiday/vacation, my current holiday is for 3 months in the same house. It's not like a typical 2 week holiday where you have to pack everything in daily. This becomes home for 3 months. You all know we travel a LOT. It's not like any of these trips are a once in a lifetime thing.
I don't see a difference between sitting on a beach under an umbrella enjoying the breeze while reading a book, or while being on a forum on my android. And unless we want to go to clubs or hang out in pubs at night, we are in the house after dinner watching tv or browsing online.