I posted a lot on facebook in high school. Had maybe 50 friends there, like my classmates, soccer team etc. Posted at least once a day what I was doing, same did everyone else, and we discussed in during lunch next day. Or I would post a general "going to the soccer field, just join in", and we'll be a group there. Then joining university and getting new groups of friends, it didn't feel relevant to "spam" everyone with these things anymore. And then friends and family joined. Then I got a job and new groups, and suddenly there's 500+ friends on there I don't want to tell everything to...
And the opposite problem with people I follow on social media. I care about your tech writings, or your sport performances or whatever. But not everything else you post. I want a slice of you, not everything.
Hence, silence.