People hate her because they wanna blame her for the mess between Nathan and Haley
People hate her because they don't want to accept the fact that Naley's relationship is going downhill, that they have real problems, that they're not perfect...so they blame Taylor, Chris, etc...see, it's never Naley's fault, it's always someone else's fault. But that's just ridiculous. If it wasn't Chris, or if it wasn't Taylor, it'd be someone else, because the relationship between Nathan and Haley is too flawed and there's not enough trust in it. Chris and Taylor get blamed, but it's all Naley's fault, and some people can't deal with that...