Because _everyone_ has a facebook account? Bank/work somewhere else if the prerequisite is to have a facebook account that is accessible to people who are not your friends.

Alternatively, if you are genuinely worried about being able to do this, I would advise setting up a public profile separate from a personal one (cpt obvious).

I remember when it was a faux pas to put your real name on the internet - long live the days of having an alias that you can make a whole bunch of mistakes to a private group of friends without being publicly remembered for it.