Because they're the Beatles.
Post anything Fabs-related here.
My favourite albums are Revolver and Abbey Road. I'd love to have been old enough to have experienced the cultural seismic shift of hearing Revolver for the first time on its release (I was 1 year old).
A Beatles-related thing came up in the Yes thread, about the lyrics to I Am The Walrus. It's not actually the willful stream of gibberish it might appear to be. It's an anti-establishment rant. It was written in the context of authorities starting to clamp down on the newly-found freedoms of youth and pop culture, for example the arrests of Jones and Jagger, and the banning of Radio Caroline. It felt like the establishment fighting back. Add to that, Lennon got the seed of the main riff while sat at home and hearing the 'nee-naw' of a police car siren going past. There are snippets of the lyric that aren't wholly on-topic, e.g. the opening lines are very much in line with his peace and love thinking at the time, and there are little bits of school playground chants mixed in. But, while couched in florid psychedelic language, most of the song is him having a dig at figures or concepts of authority, underlined by his vocal being in prime Lennonesque bitter sneering mode.