My friends (I'm 54) are probably older and more boring than yours, but like if I open Facebook right now there will be grandbaby pictures, look what I did in my shed this weekend, and politics. That's pretty much the formula year round for my timeline.
I strongly suspect that's a trend with younger people. I don't see my friends and coworkers experiencing the same type of satisfaction when posting something that I see younger users having.
Hell, I'm glad I'm not the type of old person that doesn't know how to use Facebook. Just that is really enough satisfaction for me.