i'm 33, sf now oregon raised, and i'd say in general i see less fb usage by my friends, but those that still do use it, it's almost all positive, brag-ish sharing.
people i know with kids, especially, it seems almost impossible to imagine sharing 'cats, snark, and sad moments'.
Deleted my FB account but copped a hiding from the silent majority for being 'hard to get in touch with' and feel a bit guilty about this but overall life is better without FB or any other form of social media.
True experientialism is being there in the moment, not standing outside carefully curating the moment for others to gawk at.
Edit: *experientialism not experimentalism
Yeah, the people who don't use Facebook much do the "here's a picture of my ski trip thing" but they seem like such the minority.
Anyway, I can at least tell you that once your kids actually grow up, you just might have time to once again waste time online.
I don't see people doing anything like this. Maybe I'm selective but really next-to no friends share their consumption. I think the share-your-sunsets-and-dives-into-waterfalls is the movie version of Facebook. We wind up sharing cats, snark and sad moments.