Replaced it with whatsapp for communication with friends (not fb friends but Friends). I just have a facebook account cuz everybody else has one but it is filled with notifications and messages that I don't reply to. All the people around me know that I don't respond to.

Viola, I am free of facebook and don't use it though I still have an account and have never deactivated it. Maybe it will not work for you.

P.S HN seems to be a bigger problem than FB for me atleast. Can't stop reading all posts and comments everyday.