I still spend too much arguing on HN but not as much as I was on Facebook and the audience here is generally more educated and so the arguments aren't as mind-numbing.
As another poster mentioned, it can in fact be more difficult. Almost all of my social clubs/groups over the years migrated away from websites/forums to FaceBook. I could give up an account, at the cost of losing effectively my entire social calendar.
I have a generic account with no real user data, but they still get all my content from the social groups so they still win I suppose.
My point ultimately I guess is that I have chosen the ability to continue to have a strong social life over my zuck hating principles.