I hear ya. In general, I hate heat. I don't know why I feel differently about hot yoga - but it works for me. I think it just lets me go deeper, and I think there's also something about allowing the discomfort. But that's not a knock on you or anyone else who doesn't like it. There are soooo many styles.
I do try to keep an open mind so I would be wiling to try it. It is cool there's so many types of yoga; something for everyone!!!!