I don't care much for a lot of her 'breakup songs' lyrics, but they're easily bearable- much better than painfully obvious innuendos. She's actually one of the few really popular female pop artists I like at the moment, meaning I prefer her (along with Kelly Clarkson) to Katy Perry, Rihanna, Nicki Minaj, Rita Ora, etc by a huge margin. I haven't really noticed much hate although what I have seen seems to only be since "Red" (where she adopted a more 'poppy' sound on some songs).