The Beatles didn't cure cancer or anything, but they didn't cause any either, so let's not go nuts one way or the other. They were good and effective songwriters and interesting and compelling singers, especially in harmony. I don't freight celebrities with superpowers. The Beatles' celebrity eventually so overpowered their talents that even they started ignoring the music they were making. John Lennon seemed to think he really was going to cure cancer using nothing but his attitude, and got lead poisoning for his trouble. People should stick to their knitting.