I used to hate dogs. I was scared of them and would avoid going anywhere were they were likely to be. Then my sister got a dog and I got to know her (the dog, I already knew my sister) and I discovered that dogs are actually ace.
(I had a less profound change of heart regarding musical theatre where I decided that Legally Blonde the Musical was terrible and not my cup of tea at all, until I actually saw it and it was fab).
You?