Depression is indeed a serious illness, and just because he's a filthy rich megastar doesn't make it any less serious. That said, this story coming out at the same time as the sexual assault and murder of a two year old girl is unfortunate timing, as the latter is always (quite rightly) going to have more of an impact on ordinary people.
Although I'm no fan of Robbie Williams, I hope he soon gets better, but not as much as I hope the scumbag in Leeds gets thrown in jail, and hopefully mutilated by other inmates while the warders turn a blind eye. Whoops, there go my liberal credentials.