It lacks "emotional depth":
I’m ashamed to say it, but sometimes John Lennon’s melodies feel a bit underwritten, while Paul McCartney’s relentless cheerfulness is depressing. The very jauntiness I used to love as a girl feels as if it’s covering up a sadder subtext. And what’s bleaker than a brave face?Actually, that sounds rather emotional.
The whole experience is uncomfortable, like realizing you can beat your own father at chess or arm-wrestling. I don’t want to go back and find that the carcass has been picked clean.