John Lennon became very disillusioned with life.
He did not find the answer in India as did George Harrison who found
Krishna.
He was not mercenary in the same way Paul was.
He got mixed up in drugs and screwed himself up quite badly.

He tried to find the answer in "woman".

One day in another kind of world and dimension we introduced John Lennon to
a lovely little female duck.
Human males are always very surprised to learn that there are females who
exist who are not "woman".
John could not believe the sweetness and innocence of this little duck - who
asked such absolutely sweet questions and looked up to John and treated him
like a God.

John begged leave of absence and asked that he could die - so that he may be
with his this lovely female duck who was female but not "woman" and so we
shot him.
THE BORG