This question is trolling but i will give an answer for those yet to understand. Personally i dont hate Armsrtong. I actually pity him. I imagine for all his wealth and success he has no friends, but lots of yes people. People who say yes because they are scared to say no and friends are not yes people. Stephanie McIlvain comes to mind to prove my point.
Indurain won the TdF 5 times in a row, first time ever 5 in a row. He was obviously a doper during those tours. He went about his wins in a very quiet dignified manner that meant only the most clued in fans who knew about the workings of the sport guessed he was on something, most likely EPO.
Me i knew something was up when he went past Robert Millar on a Pyrenean Col and made it look so easy, a guy like Indurain passing a climbing specialist like Millar. Nah not possible, something wrong, made me lose interest in cycling for a long while.
So along comes Armstrong and wins his first, the miracle win back from cancer, media attention from the world focused on his win. But then he got cocky and brash. When LeMond doubted that was an eye opener, after that, well he started fighting it to try and paper over that big gaping crack of doubt in the only manner he knew how, bullying, threatening and aggressive tactics with PR and his lawyers. You think people like that. Even a F****r like Hinault never did what Armstrong has done. So why is he disliked? because he is a fraud, a cheat, a bully and all the other names lists that one associates with a sociopath. Were any other TdF winners like that? I dont know of any. Anquetil was not a nice guy. I dont imagine many outside France liked him at the time of his 5th Win. Merckx was not a pleasant guy. But he was respected for achieving what he achieved and not only his TdF wins.
So why is Armstrong so strongly disliked, probably for his greed, for his doping but more for the manner is which he won in that sociopathic way all the while espousing his so called cancer charity in that 'jock' american way. I remember a great one liner about the american sports 'Jocks' spawning on locker room floors. I imagined most cyclists not conforming to this stereotype but Armstrong reeks of it.