The answer to your question is "it's all relative..."
Where are you moving from?
1. Riding in the summers here = Hot as hell. Especially if you're doing the right thing and wearing the right protective gear. But, the fall/winter/springs are obviously a lot milder than many other places, which means more riding in those months.
2. Everyone thinks they have the worst drivers, but I think Florida really may be the worst I've seen. Between the tourists, old people, and general stupidity of people...
3. Insurance rates in FL are probably higher than a lot of states due to the higher risk of bikes being stolen and accidents, nevermind the fact that FL doesn't require helmets.
4. Florida is 90% straight roads. And I hope you like sitting at traffic lights. If you can get away from the cities, there is some decent riding, but even then....it's not going to be much of the twisties. More like straight roads through the rural areas or the everglades.
5. Gas isn't cheap in FL, so I guess the better gas mileage of a bike will work to your favor.
6. I can't speak for Melbourne, but up here in Jax, the summers are always a risk because it tends to rain every day in the afternoons. Morning are sunny and clear, but by noon the clouds roll in, thudnerstorms for an hour, then it stops and gets hot and humid again.
Personally, I'd rather have a car than a bike if I had to choose just one.
Anywho, just some info from my standpoint...not trying to steer you one way or another. Just giving you some things to think about. With that said, I just bought my first bike a few months ago.
(But I have my car too lol)