I think Facebook is becoming a virtual contact list and birthday reminder, with status updates and pictures acting like mini holiday cards for events that are noteworthy but not significant enough to actually send out a card for(getting into grad school/new job).
Pretty much everyone is on Facebook under their real name, and it is the only social media platform where that is the case. The management consultant in me has a feeling that data is going to be worth a lot of money.
Google might know a lot about my interests but Facebook has my real name, real school, real job, as well as my interests.
Maybe, however for me, I haven't found anything that has replaced full albums of events (vacation, wedding, new baby). Or atleast haven't found anything that has had enough adoption to justify me leaving FB.
Just get married, snapchat that wedding ring (then post to facebook later a status update).
I still use facebook for events/groups. But I can see someone stealing that away from them.