I'd like to know what everyone thinks the meaning of this hugely popular song is.
I know for sure that Hey Jude was about Julian Lennon - John's son - to console the younger Lennon during John's divorce. The song was originally titled Hey Jules. The writing credits are Lennon/McCartney - but Paul wrote it for Julian.
This is correct.
It's not a matter of opinion. McCartney has come out and told the meaning pretty straight forward.