Never disliked her really, I just never found her character too interesting. I'm supposed to like her because of her happy-go-lucky demeanor and her heritage? She never did anything in the story that made me like her... besides well, casting Holy, but even that didn't make me like her as a character.

Also, as far as the whole Aerith vs Tifa debate, as far as character design goes, even when I was 12 (when I first picked up the game), I thought Aerith was prettier, so I refute any accusations of liking Tifa more because of her boobs.