As someone who was born and raised in Tennessee, I wholeheartedly agree with the above. I myself was raised about an hour south of Nashville, and currently am a relatively new developer, but the dev culture here is very vibrant, especially in the Hillsboro area, or The Gulch.
To comment on some things from the above:
Yes the weather is wonky here, one minute it might be snowing, the next it'll feel like spring/summer. (Like it has the past couple of weeks here.)
Traffic? Not terrible by any means, just have to give yourself extra time if you're having to go anywhere during rush hour (7-8am / 5-6pm).
Job market? We've got some great startups popping up, but mostly medical from what I can tell, most of my development work has been for something involving medical or a startup.
Environment? Tennessee is absolutely beautiful, we got everything from Mountains in East TN, the delta and Mississippi River in West TN, we have caves, lakes, rivers galore, beautiful state parks, and a pleasant parkway called the Natchez Trace running from the bottom of Nashville all the way to Tupelo, MS. The only thing missing for us is a beach, which is normally why a lot of Tennesseans go to Alabama or Florida, typically, for that.
TL;DR: Nashville and Tennessee are indeed awesome! I highly recommend people come and visit and check a few things out, cost of living here is extremely cheap compared to Silicon Valley / San Fran, and a lot of other major cities are far away, as horv mentioned above.
Remote: Please
Willing to relocate: No
Technologies: HTML/CSS, SASS, RoR, Ruby, Foundation/Bootstrap, JS, jQuery
LinkedIn: https://www.linkedin.com/in/vermosi
Website: http://vermosi.github.io
Email: aksyhlmeore[at]protonmail.ch