Why were any of us watching Lily Allen: From Riches to Rags last night, about the pop star's move from selling millions of tracks to stacks of vintage clothes? It was not because we need a lesson in the hardships of starting up a business - Allen bought all the stock out of her musical profits and her office was thick with roses. No, it was because the real intruded into a reality show: this was not car-crash TV - it was miscarriage TV.