I let it go and it happened as you are predicting: worked very well personally and very bad professionally. It was a good tradeoff, but now, 1 year later, I'm planning to get back and do a better use.
I'm so excited that another post on HN actually had some great advice on this very problem. Here it is: https://news.ycombinator.com/item?id=13062063
I'm planning on exploring this more and write something on a way to "softly quit" Facebook, maybe over the next weekend.