How do you convince your parents to move to Florida?
For you there are maybe two or three really good reasons to move to Florida. For your parents there are several reasons they choose to live wherever you are living. Things like job availability for both of them, the cost of housing, schools, sometimes relatives are an important consideration. Possibly the climate in Florida doesn't agree with them for health reasons. The list can go on and on but they have their reasons for living where they are living and unless you can show them more good reasons for living in Florida than where they choose to call home, they won't move.