right-track

Apologies but I'm gonna' make a sweeping assumption and guess you don't have kids yet.
That's not a criticism Big3 as I can see why this song could well make you cringe.
Allow me to provide a little insight.
The lyrics to 'Beautiful Boy' are intended for the mind of a child. Namely his son Sean.
Words of love and comfort, from a Father to his son at bedtime.

"Close your eyes
Have no fear
The monster’s gone
He’s on the run and your daddy’s here"

Words I wish my Father had sung to me when I was a child.
Words Lennon himself would have loved to hear from his Dad. (at the age of 5 Lennon was asked to choose between living with his Father, or his Mother. He chose his Father, only later to return to his Mother, who sadly rejected him and sent him to live with his Aunt.)

"I can hardly wait
To see you come of age
…But I guess we’ll both just have to be patient…

Lennon died when Sean was only 5. Those words have become very poignant with time. Also Lennon was becoming closer to his mother by the time he was 17, she taught him to play his first musical instrument.
She was killed crossing the road by an off duty policeman who was drunk, after just visiting him at his Aunt Mimi’s.

"Before you cross the street
Take my hand
Life is what happens to you
While you’re busy making other plans."

Lennon was an ordinary man, with an extraordinary ability for writing poetic songs.
I hope you can listen again to this song (and the rest of this album) from a different angle and grow to love it as I do. And one day sing this song to your son at bedtime…as I do.

Sorry if my post made you cringe.