Joel conceived the idea for the song when he had just turned 40. He was in a recording studio and met a 21-year-old friend of Sean Lennon who said "It's a terrible time to be 21!" Joel replied to him, "Yeah, I remember when I was 21 – I thought it was an awful time and we had Vietnam, and y'know, drug problems, and civil rights problems and everything seemed to be awful." The friend replied, "Yeah, yeah, yeah, but it's different for you. You were a kid in the fifties and everybody knows that nothing happened in the fifties". Joel retorted, "Wait a minute, didn't you hear of the Korean War or the Suez Canal Crisis?" Joel later said those headlines formed the basic framework for the song. Joel has also criticized the song on strictly musical grounds. In 1993, when discussing it with documentary filmmaker David Horn, Joel compared its melodic content unfavorably to his song "The Longest Time": "Take a song like 'We Didn't Start the Fire.' It's really not much of a song ... If you take the melody by itself, terrible. Like a dentist drill."