Parts of the South get cold in the fall/winter time. I was in the upper South during winter break 2 months ago and it snowed a couple of times and was as cold as the upper Midwest for 2 weeks. (Unusual winter supposedly, but still) I went again 2 weeks ago and it was still cold, about the same temps as the Upper Midwest. LA on the other hand is hot (80*+) year round it seems and the continuous humidity seems to go with it. (In fact LA is right now 30 degrees hotter than the place I was in in the South.) Parts of the South do get more humid than LA during the spring/summer time, but LA is more humid than the parts that actually cool down the rest of the year.
LA is not 80+ year round., usually just July/August. closer to 70 Spring/Fall. 60's in the Winter. I dislike LA too, but you're bashing it for all the wrong reasons. Also, it is 20 degrees hotter in parts of LA than in other parts, its a big place holmes.