I'm not in the "I'm leaving Facebook once and for all", actually I don't have that intention whatsoever, I am (was) a normal, active user. But it stopped being interesting. The kind of interaction Fb promotes is similar to twitter; in the first years I could see my friends showing off their breakfast or sharing their thoughts about something, now everything is 3rd-party articles, photos, videos, and complaining... LOTS of complaining (via sharing a relevant article they just read).
Ironically I still write to share my thoughts on something, without photos or shocking videos, and it catcyes my friend's attention because of the "novelty" of writing something of my own instead of just sharing some link.
Btw I've NEVER wanted to install Fb apps, especially since they forced everyone to have the Messenger app if you want to chat. Always used m.facebook.com for checking out, and mbasic. for chat (with the added benefit of the crappy UI pushing me out from using it...). Similarly, Twitter is another service I use, and never wanted their app installed, instead I use their website. The same reason frequent use of Reddit is out of the question for me.