Again, you know me so well.
I don't use my full real name on fb, as I don't want loads of people I don't care for to find me. I use a different email for it so people I don't talk to anymore, nor care to talk to, won't be adding me via the email function.
I'm not giving up any privacy because I put nothing I want to keep private up there.
Again, I don't care what you think about facebook or similar services. I'm just saying that you are giving bad advice because of the generational gap you can't seem to overcome.