I've considered moving down there and my fear would be that I would make Disney "too accessible" - that the magic of it would be gone by over-doing it. Has that happened to any of you?
Not for me... but... it certainly changes the way you visit and think of the parks.
We moved to Tampa from PA last year, mostly so we could be closer to Disney. (Things like no snow also weighed into the decision!)
In relation to being close to Disney, it's definitely an awesome advantage. Like a previous poster mentioned, the part of Tampa we're in means just about an hour from our door to Disney property. Being able to go to Disney for a day (or weekend) with little or no planning is great! We go about once a month, give or take.
I don't think it's lost any of the magic for me. But I definitely notice it's changed the way we visit. Gone are the week long vacations. Gone are the days of spending time for weeks (or months) ahead of time planning out our days, meals, etc. For me, that part was fun. Of course, part of the reason of moving here was to become a travel agent specializing in Disney vacations, so now I get to help with the planning for others.
But for the few "negatives" if you wish to call them that, there are so many more positive things that make up for them. We rarely stand in a line more than a few minutes long - we know to either ride it early, fastpass it, or just skip it for this time. No worries about missing something - we can hit it again soon. We've also got to try a number of restaurants, visit most of the resorts (still taking a few hours here and there to go explore them!), and really explore everything. And the best part? After more than a year and a number of visits, we still haven't seen or done it all! We go, relax, walk around, take breaks, and don't worry about it.