Dr. O’Boogie’s amazing guitar, which wouldn’t have been out of place at an 80’s punk gig.
The lyrics’ message, however reasonable, was not what people wanted to hear in 1968.
Didn’t like it then, do now. Partly it’s because now I know it’s about Julian Lennon (and by Paul, not John). Also the sentiments of maturity. The extended repeats of the chorus are audacious and beautiful.
It’s interesting that both songs counsel against extremes of emotion, one in politics and the other in, well, emotions.