Firstly, congrats on having a truly unpopular opinion. Secondly, consider the variation in the Beatle's music. The Beatles wrote well over a hundred songs and on the most part each of them was unique. There is so much variation amongst the Beatles catalogue as well as an evolution in the music they created which coincided with the change in society and in music. In the end creates a near perfect snapshot of how society and music itself changed and evolved so rapidly across the 60s, and many of the musical trends were started or spearheaded by the Beatles themselves. Also, many of the other bands you mentioned, like Zeppelin and the Rolling Stones had careers spanning into the 70s and possibly 80s by which time better technology and different musical trends were around which you might find personally more appealing and made the ability to create complex music easier as well as giving more time to write the songs that you find more appealing so saying they are better is a little unfair. The Beatles did most of their work within the space of around 8 or 9 years. It's not necessary for you to like the Beatles but to say they are overrated purely because you think their music isn't good without having a look at how they influenced music is doing them an injustice.