i wasn't born until 1965 and I play drums rather than guitar but I agree that for many fans the BEATLES are 4 guys we can identify with. They have personalities and charm and humor and even vulnerability. They didn't try to be "cool" or have an "I don't want to be a rock star" attitude. They always seemed like they were having a great time. And yes the SONG was the focus. There are Beatles songs such as eleanor Rigby where none of them even play ( am I wrong on this?) yet it's still a BEATLES song.
It's hard to imagine that we'll ever see that much creativity and individuality in 1 group ever again.
But if you don't like them- hey, that's okay too. But you're missing out! ha, ha.