Hebrew mythology has a nice piece of finger-wagging, admonishing us not to "spill our seed upon the ground." True, they're probably going for the literal read here, but I'm taking this in a different direction: I challenge to you to stop expending your best energy on Facebook (or twitter, or Instagram, or Tumblr, or whatever). Stop generating free content for people don't know you and don't give a rat's ass if you live or die.
I'm not telling you stop posting on Facebook; I'm asking you to stop writing FOR Facebook. Keep creating - by all means - but do it on your own blog, for your own self, and then link to it on Facebook to increase Your page views and build Your brand.
There's never been a better time or an easier time to be a writer, photographer, or artist. Blogs can be set up instantly and free. There are plenty of apps. You can do it from your phone. Remember: social media means to steal your gift, or worse yet, to compel you to give it away to them for free. So stop.
Why not have Facebook and its ilk work for you, instead of the other way around?