Close a FB account is no option... ever lived in a country where FB is essential? It's maybe not USA or many bigger Europe countries but if you go to smaller countries (where Google Maps is even bad) you will loose a lot (groups, buying/selling, advices).
Just because you don't have a Facebook account doesn't mean they don't have data about you. They create a shadow profile for people whose existence they have inferred from other people's accounts.
