Well first off I have to say I haven`t been back to South Florida since 1979,I was raised in Miami/Kendall..but it was way different back then..my parents had close friends in Key Largo so just about every sunday we`d drive down.They had a charter diving boat and also my Dad and his buddy taught diving at Coral Reef Club(I wonder if it`s still even there?).Back then the fish and lobster were plentiful(spear fishing mostly).As a kid I`d snorkle around the reefs watching the fish that were being caught.Those are some of my most vivid memories,I was always in awe at the beauty.When us kids got a little older we had our own little skiff and we played around with the neighborhood wild porpoise(really) and snorkled in Lake Surprise which was actually an inlet I`m guessing..since there was "fields" of HUGE brain Coral.When we all got older. still....it was cool sippin`tropical drinks from our boats at one of the many tiki bars,while groovin to Steely Dan or Jimmy Buffet.
To answer your questions:
Yeah,it`s HOT and humid,but in FLA there`s always some water to jump in!
As far as population I`m sure it`s Overcrowded

though you can still find SOME solitude and decent land prices in some parts of florida,I`m just not gonna say where...lol
Pests??...I once broke down near dusk in the keys and went to get out of my car...and was immediatly COVERED by mosquitos..and i mean COVERED..maybe they have that under control nowdays...but i kinda hope not...those chemicals can`t be good for the enviorment.
Well thanks for the flashback...I hope I`ve helped a little
Shari