Florida would be nice in winter, but when I have visited there (usually summer), the temperature was very hot. If you aren't in air-conditioning, you might have to be near the water then to cool off. One year we went to Disney Worled in late September-early October and it was even hot and sticky then. Fortunately the crowds had thinned-out a bit post-summer and before the winter visitors, but it was still tiring. I think there is a compensation to anything. If you hate the heat, then summer in upper Michigan or Wisconsin could be wonderful. If you hate the cold, then winter in Florida would be great.
As for deserts, I'm not much for them either. Seems like even when the days are very hot (if arid), the nights are still pretty chilly. But, I have known people who came from the Southwest to visit Ohio in summer and they claim that humid Ohio at 90-some degrees feels hotter to them than 110 degrees with low humidity in their locale. I would agree with this -- most summers. Ohio feels plenty hot from June to August. I've spent many a summer here working outdoors and the sweat soaked my clothes and then comes dripping off of me!