I grew up nearby, in Greenville, SC, and Atlanta was "The City". But, I've never liked it. Even with family there, I'd never consider it a place I'd want to live (and I really like my family!). I also don't choose to live in SF, but I'd pick it long before Atlanta.
That said, it is a growing city with a ton of opportunity. I know some folks who've moved there from other cities and they almost immediately found good work in their industry of choice (film, where they'd been struggling for years in Austin, having to have a second job in retail just to make ends meet). So, sure, cost of living isn't bad and the economy is definitely booming. But, it's not a nice city, IMHO.