I fired up my facebook account a couple weeks ago after having it disabled for a couple of months.
It is just too hard to do what I do without an account, because so much information I need when researching people is most easily obtained on Facebook. Facebook's structure requires people to include information that is often left off their websites -- better bios for authors, bookstore hours of operations, event details, etc.
I still post links, that get virtually no engagement. I've come to terms with the fact that I just don't have it in me make the type of posts required to get engagement of Facebook.
On the advice of my students, I have recently begun using Instagram. I've purchased some advertising and even installed the app on my phone. I've created some posts and am experimenting with the platform to see if I can generate some traffic to the website.
But I know, unless the traffic generated is great, I will not use the platform. I just don't like engaging in the activities that are needed to amp up traffic. All the sharing of personal minutiae is too much for me... I'm even beginning to feel contempt for the people doing all the sharing.
...this is a bad sentiment, because in the real world I actually really like some of these people. So it is likely I will ultimately disengage from Instagram before I become some online misanthrope.