In real life Lennon was always a bit flighty and incomprehensible to me (like many artists in the 60's) but at the same time I believed he was the creative juggernaut behind the Beatles. Without Lennon I think the Beatles would have been a good band. McCartney and Harrison were that good. With Lennon, they greatly expanded the musical frontier and were larger than life. And oddly, while Lennon had a great solo career it seemed to pale in comparison to McCartney and the Wings. I don't believe Yoko was a positive influence on Lennon's music. Their last record was destined for flop city had he not been murdered. Sad day.