Many states in this country have a similar law that mimic stand-your-ground like in Florida. So Florida is not special with regard to this law.
That said, I think this country is in dire new of gun law reform. Politically, it is almost impossible to pass a legislation banning guns. Despite increasing discussions on gun control after the shooting in Newton, the noise is really pointed towards banning accessories that are considered irrational for a private citizen to have -- assault weapons and high capacity clips. A Gallup poll indicates that historically, opinions on gun control has been towards liberalization [1]. The constitutional hold of the second amendment is way too strong for any massive change in our gun laws. 42 states in this country guarantee their citizens the right to own a gun allowed by their constitution. When issues of gun control reach the state courts, they often side with an opinion based on constitutional grounds [2]. Second, aside from health care, gun lobbyist are some of the most powerful players working in Washington. In a single year, the NRA spends up to 7.2 million on advocating for or political candidates that share their narrative. Lobbyists are able to appoint pro-gun candidates in congressional seats that would create large resistance in passing forms of gun control. However, you may ask: are there pro-gun lobbyist as well? You're right, but their buying power sure pale compared to the competition.
Personally, stand your ground laws will be there, and the political power the is able to get rid of it won't come for many many years in the future. We are at the embryonic discussions about how we view guns in this country. In short, I think what needs to happen first is not gun reform, but lobbying reform. In the words of the Right, you must "starve the beast" if you want it to die.
[1]http://sas-origin.onstreammedia.com/origin/gallupinc/GallupSpaces/Production/Cms/POLL/uuwd0ulbyeognw9pt0zj2a.gif
[2]http://www.scotusblog.com/2010/06/a-minimal-effect-on-gun-control/