I think you can do a search to see how to get off facebook. Something came out about how to do it to really get all your data IIRC.
Use your own judgement regarding FB, I have no idea really. The only reason I would have facebook would be to keep up with a handful of relatives who live far away. But with email, I wouldn’t really want to sign up.
Everyone on Facebook contributes to Zuckerberg’s wealth by merely having an account in my opinion. Remember companies pay Facebook just to get their ads out to the public. If Facebook had few members to view those ads, the companies would find paying Zuckerberg to not be a good investment of advertising funds.
Just my opinion but I won’t support that b*stard. If I want to contact a friend or share a photo I will email.