For better of worse, my prejudice of facebook is that it is an outstanding source of the following types of content:
Humblebrag b.s. instagram photos
passive aggressive shitposting about politics
I can use social networks at work- but if they actually brought facebook in and demanded that we used it, I might consider quitting. I'd probably write a python script to repost random technical shit from a reasonable set of Twitter sources. But no way would I be happy about bringing facebook into my office.