I use different services for different community focuses - like YouTube and Twitch for gaming videos/streams I watch with friends. Instagram for incidental activity picture stuff. Twitter for talking directly "to" companies. Signal for IM stuff. I do actually use Google Hangouts for board game nights and talking about projects sometimes - kinda silly. :-)
I just find Facebook a mess with the ads and disorganization looking at so many facets of my friends' lives. Google did good identifying the need for putting people in circles, but Facebook was so well-established by then. I only want to view things my friends are doing if its a mutual interest, really. Facebook is like manually filtering through several streams of consciousness - it's more exhausting than rewarding.
I don't think Facebook is ever going to fail and be the next MySpace, but I do think social attitudes have changed about using a 'general' social networking site.