I simply couldn't live in Florida permanently. I was in Montgomery, AL for 3 years and that was bad enough. When I got there and I told people I disliked (didn't bother telling them I hated it) the warmer weather, the response was generally the same. "You'll get used to it and never want to move back north." Uh, no.
I like the seasons. I like that sometimes it's cool, sometimes it's warm, sometimes it's bloody hot and sometimes it's bitterly cold. Personally I find it much easier to deal with extremely cold weather than extremely hot weather.