I had given up on rock & roll, because most of the good performers were dead or not performing. R&R was replaced by Frankie Avalon, Neal Sedaka and other sacharine performers, then the Beatles came along and revived the music, and I give them credit for that, but by then I was into Country music and didn't care to much about R&R anymore. Yaars later, listening to bhe Beatles, I thought that their attempts at Rockabilly were pale imitations of the originals, but otherwise they were not bad. Some of their later stuff left me cold, but there are some songs that stand out, especially anything that George Harrison did. I don't think they gave him enough exposure on the records. I can still remember the words to "Octopuses Garden", "When I'm 64", and "obla Dee, Obla Da", and I find them incredibly cheerful, but others, like "Revolution nr 9" and "Rocky Racoon" just seem totally unnecessary. Just my opinion.

As for "Sgt. Pepper" being the best rock album ever, I don't believe there's any such thing. There are so many different types of rock music that somparing them and choosing one seems kind of ridiculous.