Much like Portaloo cleaners and gastroenterologists, award ceremony host is a thankless job that involves handling a lot of crap. The Academy Awards got so used to its hosts tanking (see: a gurning James Franco; Seth MacFarlane singing about boobs) that they briefly stopped hiring them all together before returning to the safe, staid embrace of Jimmy Kimmel (four years in a row now and counting).
Most hosts are either overtly trying to be offensive (see: Ricky Gervais, Macfarlane) that it becomes boring, or so inoffensive that they’re boring (see: Kimmel). On the years someone does an outstanding job (see: Amy Poehler and Tina Fey, Billy Crystal), they mainly serve as a reminder of how terrible everyone else did.