Not FL, but...
My mom's entire family lives in MO. We grew up and live in CA. I never got to know that side of the family well, we saw them once a year at the absolute most. We didn't grow up with extended family, or cousins, or any of that. I'm jealous of people who did.
But the biggest thing was how hard it was for my mom when my grandparents got older. My grandfather has emphysema and lung cancer. My grandmother had Alzheimers and it was awful. If it had not been for my sister and I out here, I think she would have moved back. My grandfather passed away several years ago, and my mom just happened to be there on a visit when he passed and got to see him one last time. My grandmother passed away the day my sister went into labor. My mom and I got on a plane the next day to plan the funeral. That side of the family still has not met my (now two) nephews.
Despite the fact that I despise the cost of living in CA, and I wish we lived somewhere with less traffic, more trees, and better schools... I will never move too far from "home" (where my family is, not the location) out of fear of going through the same thing,
(sorry to be such a buzzkill!)