Hope I Die Before I Get Old?

Back when he was 20 years old in 1965, rock star Pete Townshend wrote the line "I hope I die before I get old" into a song, "My Generation" that launched his band, the Who, onto the rock 'n' roll scene. But a unique new study suggests that Townshend may have fallen victim to a common, and mistaken, belief: That the happiest days of people's lives occur when they're young.