There are advantages and disadvantages for both. This is all based on personal expiernce and stories I heard first-hand, or stuff I saw on TV.
Disadvantages of flying in Florida, and tips to deal with them:
* to avoid the humidity, get an air-conditioned place and never leave home. Either that or go flying in a swim suit.
* avoid all airports. Just at my flight school we had like seven fatalities in three years, one of them a suicide (an instructor in a light twin), all in close vicinity to airports.
* always wear a helmet, because the hot & humid air will be knocking you around alot.
* make sure your plane has good visibility straight up so you can avoid all the skydivers (esp. in the vicinity of DeLand--you can tune CTAF if you want but don't bother because it's constantly filled with calls of "skydivers over DeLand...)
* don't fly low at night near the coast or you may be forced down for smuggling drugs
* fog every morning, thunderstorms every afternoon. When the lightening turns green, go hide in the basement. Your living room won't work, as this dead guy you lived not to far from me would explain to you if he were alive.
* farmers take pot shots at you if you do too much ground reference near their fields, or they complain to your flight school because the airplane engines cause the chickens the start killing their chicks (I am not making this stuff up)
* alligators known to sun themselves on runways (this happened out of the place I flew at--Delta MD-80 had to do a go around until they could drag it away) when they are not busy eating dogs or little kids.
* fireants (make sure none of those critters get in your shorts before you go flying)
* retired people will kill you by car if you aren't killed by plane first
* fligh schools lure you in, then you can't get a plane because Air Saudi Arabia is paying twice the rate you are for an airplane, or because freelance Saudis have bottomless bank account yet no interest in learning how to land.
Florida advantages:
* amusing to watch Saudis go down on their knees when Crown Prince of Saudi Arabia arrives for surpise visit
* no mountains, no hills. Highest point is a garbage dump. But beware the 2,500' towers, and permanently teathered 10,000 foot high "weather balloons" that seem to make all the drug smugglers suddenly get busted.
* you will learn the definition of "white trash"
if you don't know it already. "Damnit, you boys don't know the difference 'tween a hillbilly and a redneck!" (line actually spoken to me by my next door neighbor.)
* you can see the Space Shuttle take off if you aren't too far from... oh wait... nevermind.
* most hurricans always magically miss FL at the last minute... except for that one 4 years ago... and FL seems to get at least one solid hit one every 4 years...
* cheap to fly. Welfare queens with 2 kids get more $ than instructors.
CA Advantages
* no rain, no clouds (unless you count L.A. smog), no Saudis. Well, less Saudis, and most of the terrorists decided they liked Florida better.
* earthquakes have no effect at 5000 feet.
* excess of senile FAA-certified check ride pilots may pass you because they can't tell your short field was 400 feet long
CA Disadvantages/Tips
* excess of senile FAA-certified check ride pilots who may fail you because they say you gave them the wrong answer then proceed to give the right answer which oddly is the exact same thing you just said.
* If you live in Sothern California, lock your plane well, or else Mexican drug smugglers will steal it.
* If you smuggle drugs then crash and die, the Mexicans will give you a free cremation once they get to the wreckage.
* extra gas tax, on both AvGas and regular gas (new extra-high higher tax now that the previous merely high-tax "environmentally friendly" gas polluted all the drinking water)
* You may have trouble communicating on the ground if you don't speak Spanish or Chinese.
* Cost of living makes New York City look cheap, so get a place in the stix.
And frankly, from what the European pilots I've talked to have told me, both Florida and CA are about ten times better than Europe, what with the ridiculous cost and Mount-Everest high mountains of red tape.