I never liked them, not when I was growing up anyway. In the late 60s, when I had my musical awakening, the first groups I did like were the Stones, the Who and the Animals. Later I got into Black Sabbath. The Beatles always seemed too "goodie-goodie" or something.
About ten years ago, in my mid-40s, I started to notice something. Whenever I'd hear an old Beatles' tune, I'd have the most enjoyable nostalgic sensation. I guess I finally outgrew that childhood resistance to the "goodie-goodie" stuff. So, I bought some of their old albums for the first time in my life.
Amazingly, I was familiar with almost every song, actually familiar enough to sing along with the lyrics in the car, which I did plenty. I realized that the Beatles had always been there in the background of my life. It's as if my brain had been absorbing their music all those years. What a pleasure to discover.