I live in Florida as well. This is one of the states pushing for permanent DST. I'm quite certain a big reason is tourism. Visitors like to get up and watch the sun rise on the Eastern side and sun set on the Western side. In both cases it's better if it's later. You can sleep in a bit before the sun rises, and it's nicer to go to dinner around 7pm, then have drinks and watch the sun set. In the winter you'd have to get the early bird special before watching the sun set.