Back in 2011 I also used Facebook to "keep up" with my distant friends and family. I read their posts, looked at their photos, liked their comments, left notes here and there.. Chatted with them..
Then one day I realized that these were all (for me) extremely shallow interactions, and I decided I would make a better effort to stay in touch.
I closed my Facebook account, and made a commitment to reach out directly to the people I cared about. Perhaps less often, but in more meaningful ways.
I started sending monthly emails, and scheduling Skype or (eventually) FaceTime calls, and so on..
Fast-forward 6 years of that and I feel much more connected to the distant people I care about in my life than I ever did via Facebook, and almost all of them have reciprocated my efforts at maintaining a better connection..
Again, this is just my story, but you really don't need Facebook to stay in touch with the people you care about, no matter where they are in the world.