I use FB to keep up with relative, GC and friends who live away from me. I just set privacy settings I need. I don't use it daily and I have complained about a threatening person which FB blocked from my page. They were very helpful with the situation. It's only a technology tool like the Quilting Board. I don't solicit or click on any of the ads or play the games. You can block anyone who wants to befriend you, if you like.
All media/technology have their own slants. Don't take only one's "opinion" as fact. Do the homework yourself and become informed enough to make an your own "opinion" which will probably be better anyway. Information is very, very easy to come by in this techno world of ours...