> the activities you cite are so far faring badly. Putnam and Murray (Bowling Alone/Coming Apart)...
There are two problems with Bowling Alone.
1. Bowling is boring; I'd rather grab a cappucino.
Putnam and Murray suppose that the social institutions and conventions of 1910-1940 were a platonic ideal and therefore ignore the myriad of new ways that people socialize and engage in their communities.
To pick just one relevant example, hackerspaces only existed in a few major cities when I became interested in them 10-15 years ago. Now there's at least one in every major city as well as many in smaller communities. But hackerspaces are just an example; there are thousands of other examples of the same phenomenon: popular and thriving community forums that didn't even exist in 1910-1940.
This form of community engagement is the sort of thing that Putnam and Murray completely miss in their analysis because, for them, "community engagement" means regular contact with one of ten or so institutions they happened to have statistics for when they wrote their book.
I spend less time at church potlucks and bowling nights than my grandparents. But then, my grandparents never met friends at coffee shops or hung out at hackerspaces.
2. Far more damning, Putnam and Murray weren't even correct for the tiny subset of community engagement metrics they chose to form their best-selling "darn kids born after 1940" thesis. See e.g., Everett Lad's critique of Bowling Alone.
So not only did new forms of community engagement pop up in response to changing times and interests, but traditional forms of community engagement continued to thrive!