One of the worst things about Facebook (there are so many) is that the privacy settings are exceedingly hard to find and customize and are set by default to be open, i.e., new accounts share EVERYTHING. You have to be fairly savvy to know how to lock it all down, and it's designed that way for a reason. Also, Facebook accounts show up in Google searches.
I was a very late adopter (something like 2010) and my only "friends" were family. When the Russian hacking scandal came to light, I deleted my account and haven't looked back.
Also, my sister has over 1,000 "friends", and I, too, go