I thought about it as well, weighing the security breaches against staying in touch with people, and concluded that whatever I am worried that someone would get has already happened. Therefore, I’ve taken some steps to prevent any further excursions by outfits like Cambridge Analytica into mine and my friend’s lives. I’ve cut down my number of contacts down to a small, manageable number and of people I can control. Removed any pictures of my children and be careful of what I post in the future. I’ve also made access to certain information more restrictive. I won’t participate in surveys, test, and any of the other distractions FB had provided in the past. Note: I never understood why some of these would ask for a login to post on your profile if you were already logged in. Always seemed like a security violation.
Anyway, to keep in touch with family, former classmates, co-workers -friends, I will remain on FB. I will also remain to do so more carefully.