I fully expected that sort of reply. Dude, admit it: The Beatles were a the early 60s equivalent of a boy band. They wrote about love, finding girls, dancing, stupid crap that teenage girls go crazy for. They were just playing that sort of stuff because they loved playing 50s rock and roll for fun in the clubs in Liverpool. They didn't want that to be their legacy, and they had much more talent to express, so they changed their image to artists and experimenters and complex songwriters. It's a similar change that Dylan went through as well. He was seen as some folk prophet, but he was just playing the music he knew and loved as a young kid. He shifted his image to a rock and roller because that's the music he was feeling at the time, and he didn't want to be brought down by labels he didn't believe in.
This shit is like, obvious mang.