Another fellow Floridan here...
Sarasota is one of the best places that you may see in Florida after Miami. Yes, it's a place full of retired people which makes it silent, yet more secure. You'll feel very lonely in Sarasota first, but then you get used to it. I'd stick with friends alike and make a support system as soon as possible. Siesta Key and other keys are must to see but not at the weekend, many flood into there. You can spend all day at the beach cause the sand is ice cold (yeah! that's amazing) in the heat of the sun. Get your friend(s), drinks (in a durable ice pack), and books, and stay there till late in the afternoon; you'll love it. There's a cute downtown there, in which arts and crafts fairs held several times in a year. Whole foods' a good place to hang out. I'd rent an apartment close to University Parkway (must be around $800/month for a 2-bd-2ba apartment with amenities like hot & cold pools, gyms, tennis courts, etc.etc.) All in all, Sarasota is a nice to hang out for some time, but not for long if you're not at your 60s!.. You'll experience it... (PS. Don't bother with the weather. There're 2 seasons there, summer and spring. Spring becomes a little bit of colder, for a few days, though.)
I'd agree with this assessment except the weather thing.
I feel like last few years have been proven to get colder and colder in Fl. In 2007-2009 winters were well into the 30s and 40s and no longer the 50s and 60s of yester years.
And the last year it was as low as 20s that there was ice on the ground in winter time and on the roofs such that it almost looked like snow. It felt like I was back in Boston during the winter this past winter break.