I've been a fan of The Beatles (and Lennon & McCartney's songs) for so long I can't even remember what originally made me say, "I LOVE these guys!" I do know that it was The White Album that inspired me to learn to play the electric bass ("Dear Prudence," to be exact). That album changed the way I listen to music!
What amazes me is that within the span of three or four years The Beatles went from being a great Pop group to being a fantastic Rock band. Hard to believe only three years separates "Eight Days A Week" from "Revolution." How many of today's artists can claim such diversity in such a short amount of time.
The Beatles weren't afraid to experiment, either. They weren't held back by their producer. Where some producers would say, "I think that's a bit too much," George Martin actually gave them the freedom to try new and innovative ideas, as well as take part in the actual recording himself! That's George Martin playing the piano part in "In My Life," for example. Had George Martin been too cautious, "Strawberry Fields Forever" may never have been released as it appeared.
And we may have Bob Dylan to thank with helping Lennon & McCartney get into writing more introspective songs. I heard a story that said when Bob Dylan met The Beatles for the first time back in late '64, he told them, "Your music is good but your lyrics don't say anything," or something like that. Not long afterward, John Lennon would write "Help!" "When I was younger, so much younger than today, I never needed anybody's help in any way..." A far cry from "She loves you, yeah, yeah, yeah." Had Lennon & McCartney been too proud and never taken Dylan's advice, who knows what kind of songs they would've given us... or what songs would never have been written.
As for George, he was a very good student, having learned songwriting under the tutelage of Lennon & McCartney. George's "While My Guitar Gently Weeps" is another reason why I love The White Album so much. "Something" and "Here Comes The Sun", both on the 'Abbey Road' album, are even better than some of Lennon & McCartney's best work.