too much freedom.
you can buy a stamp and send a letter anonymously.
Big Brother doesn't like that.
it's unlikely they will change the system to collect everyone's info who sends a letter, so with the goal of collecting the sender's information, the obvious solution is to privatize the entire mail system where you have to pay (and give your info) for delivery.
Man! ...i'm looking forward to hearing about the big unsolvable budget crisis that be goin' on.