there is no good reason to have one IMO. It's clear what it is and even though you might not have much information on there, other people do. Eventually they will link everyone in real life to their on line profiles. It only takes one slip sometime in the future and they can link every think they have collected on that anonymous profile to a real person.... well as real as a person can be I guess. Chances are you won't make the slip. Someone linked to you will.
moto: give em nothing, taking em no where.
works in lots of situations.