I'm a native Floridian, as are my parents and their parents and so on way back. We grew up with no A/C and swam where gators and snakes lived (though there weren't as many gators then). Humidity didn't phase us.
My mother says it never even crossed their minds to leave because of a hurricane. Nor do my friends and family who still live in Florida. I suspect, just like here in Charleston, SC, people who have moved to Florida or here, who have little experience with storms, leave. Those of us who are natives or have been around a long time, usually don't.
We know our vulnerabilities and act accordingly. If we lived on a barrier island, we'd evacuate. If we were expecting a Cat 4 or 5, we'd evacuate. If we had flooded in the past, we probably would evacuate. If we were in poor health, dependent upon electricity for supplemental oxygen, for example, we would evacuate.
We prepare during the days as we wait to decide. All the objects that might fly outside have been taken down and stored away. The flashlights are scattered about inside along with candles, matches, and a lantern. Important papers are in waterproof and fireproof safes. Other sentimental, and easily destroyed, by water, important items, are stored higher up in plastic boxes. The cars and golf cart are in the city parking garage. The Vespa is in hubby's warehouse. We've done this so many times that we know what works best. And if all that fails, bags are packed for us and our pup in case we have to leave quickly. We are battened down and hunkered in for the duration. Just have to go fill up the bathtub for toilet flushing water in case we lose power. We are on the same grid as City Hall, and county, state and federal buildings two and a half blocks away. It seems as if we never are without power for long, perhaps because the government gets back on line first, and we on their coat tails. If we do lose power for a longer period, we and our neighbors, most who have remained, will be sharing and grilling out together from the bounties of our freezers. Our home is surrounded by 8 to 12 foot, built no later than the 1860's, brick walls and a house close on one side, in front and behind. We have hurricane shutters closed and bolted on the inside, though only on the front of the house. We do have interior shutters closed.
Though we are two and a half blocks from the harbor, we have never flooded and are on "natural higher ground". Those who do flood are built on filled in creeks and former marsh land or sitting right on the rivers and harbor. We have a three foot crawl space.
I agree that storms seem to be more frequent. Flooding is certainly worse. I suspect climate change, poor land management, and over-development have something to do with the rising flood waters.
I'll get back to you after tomorrow, if possible, on how this one goes.