Just ignore all of the crap.
FB does have its uses for gleaning local news etc.
I don't get involved in anything outside of my own little interests and I don't use my real name either - so no one can search for me.
Yes, I do use FB, and, as you say, ignore the bits I don't want. It can be useful to keep uptodate on what casual acquaintances are doing. But, don't some people post the most stupid personal stuff?
My Daughter-in-law is an avid FB poster (fortunately with appropriate privacy settings), so, it was an easy way to keep uptodate with the grandchildren's progress, since they have always lived some distance from me (USA, Azerbaijan, now, Windsor, so, getting closer).