Patsy, for high-gloss feel-good American music, it is the secret of success that it sounds "self-evident" in hindsight without really being predictable. Bacharach is its classical master, in a sense comparable to Mozart. The Beatles, in a different genre, actually managed to expand the range of what was considered to sound good, which is their historical merit. For parallels in classical music, Beethoven and Schubert have been named. Unfortunately, a large part of what the Beatles published was indeed either predictable or just weird, in other words mediocre.

Well, they're history now, and the only rightful cause of "hatred" about them is the commercialist necrophilia encountered in today's media, as mentioned above.