Idol judge Simon Cowell has pointed his finely-tuned criticism at Britney Spears and Robbie Williams, slamming them for checking into rehab when there are millions of people suffering real hardship in the world. Cowell recently visited an impoverished country and, after bearing witness to the horrific living conditions there, says Spears and Williams have no idea what serious problems are. "This whole thing is a total indulgence. Britney and Robbie need to get a grip," Cowell says. "I don't know what's going on in Britney's head but my attitude is I couldn't care less. She should go back and live with her mum for six months... I went to a deprived part of the world recently... It really opened my eyes. You can feel sorry for yourself over the smallest things, but then you look at the world and you think, 'I've got nothing to complain about.' So when I hear about the Robbies and the Britneys going into rehab, I think, 'I'll tell you what rehab is. Go to where I just went, where people are really suffering and then you'll see just how good your life is.' I mean Britney is not working in a coal mine, is she? You are whisked to the studio in a very large limo, you are flown around in private jets, everyone will agree with you and physically making an album is a doddle."