Uh...im not quite sure the latter poster understands what "she broke them up" actually means. Im sure, in your ridiculous and ignorant world, you think "well she didnt actually physically force Lennon to leave and then break up the beatles so shes not responsiblez!!1". But here in reality most of us recognise her sick and controlling relationship over Lennon that caused him to break up with the Beatles for what it was. The point being, that if she had not come into the picture the Beatles would not have broken up when they did, in fact may have stayed together for much, much longer (decades even). Maybe you'll still attempt to say "oh, but its not her fault still!", but that would perhaps mean something if she didnt use her control over him to force him to leave. 

 Oh, wait...not he loved her, I see, then that makes it aaaall better. Not her fault, Lennon loved her. Yeah, no. Cobain may have loved Courtney Love, but as much as he defended her she was NOT good for him, she encouraged his drug use, pushed into his creativity and worsened his already problematic depression, which itself was sustained by the problems she caused in their relationship. Lennon was even worse. If he had depression Yoko would have fucked him up even worse. He may have loved her, but he "chose" to leave the Beatles solely because of her being a bitch to everyone he worked with, and his band, refused to get along despite honest attempts by other band members, pushed worse drugs on him when he was only a rare user of harder drugs, made him soo inverted through her constant (documented, or in case you hadn't noticed theres countless hours of video of her idiocy) passive-agressiveness and control and eventually turned him into...frankly, her bitch. Oh, but a loving, well treated bitch, that makes it perfectly ok, right? 

 We may allow this sad, selfish crone of a woman to have a wiki article free of serious criticisms and controversies, but we do that because we respect a good article, not her. Do not take our inaction on every reason we should hate her as a sign that she did nothing wrong.    Lennons Ghost