Joseph Heller (author of Catch 22) must be turning over in his grave, probably laughing hysterically. It seems that you can't get rid of Facebook and you can't rejoin! Many Are Abandoning Facebook. These People Have the Opposite Problem.
Fortunately, I never joined and never will.
OS 10.14.6, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365