Today I just turned 44.
A few days before my birthday, I deactivated my Facebook account because of a very personal reason... and also I want to find out if anybody who were my friends, will remember my birthday (I know I have some 'real' friends there). I want to prove something.
Sure, I could just hide my birthday and there's no need to deactivate my account. Again, the birthday was only secondary, there's a different reason for doing so.
Anyway, I was right. Only a few remember - one was an elder from the community I belonged to who was holding the records of the birthdays of each member, and another was a friend who will never forget my birthday because he celebrates his birthday on the same day.
Really, what a big help Facebook was... reminding friends to be... well, real friends.