I love FB, but I don't friend people I don't know, and I feel perfectly comfortable unfollowing people whose posts bother me. I don't have to do that very often; most of the people I FB with are good people and we just use FB to keep in touch and share some fun. Another recommendation that has helped is FBPurity. It is an extension that helps you personalize FB to hide things you just don't want to see -- everything from ads to trending topics, etc. It only works on computers (not tablets or phones unfortunately), but it has definitely improved my FB feed. Here's a link: F.B. Purity - Clean up and Customize Facebook