Sorry about this repeat thread guardians (I know this has been discussed many times before ad nauseum), but I just watched the Beatles Anthology again, I guess my interest in the group re-stirred after watching the movie "Yesterday". I know more than one factor was involved in the Beatles breaking up but what was the #1? Here's a list of ones I can think of: 1. John's obsession with Yoko Ono and bringing her into the studio. 2. George's obsession with eastern religions. 3. heavy drug use starting in mid '66, especially with John's reputed many hundreds of acid trips. 4. The death of Brian Epstien in 67 5. The stopping of touring in 66 after which they did not spend nearly as much time with each other and kind of caused them to lose focus as a performing band. 6. the over the top insanity of the fans which allowed them no peace. 7. the disagreement of who was going to lead or manage the band after Epstein's death. Some might say that differences in musical directions but from what I observe this is not a factor. or some might say Paul's overbearing control of bands direction but that was only by default cause none of the others were stepping up to the plate and doing anything to keep it going. it almost seems as if Paul by sheer will was breathing artificial life into the Beatles from 67 on. my opinion is the the main reason for the break of the Beatles were the stopping of touring. They were conceived and thrived as a live band and when they stopped playing live they began to die.