I'd like to propose a middle ground. As someone who puts effort into avoiding added sugars, it is much more difficult to find unsweetened tea at some chain restaurants or convenience stores.

Being from the North, I'm no authority on Sweet Tea, but I've heard that it's nearly saturated with sugar. If so, that's not what's usually available either.

I've encountered many a place selling sweetened tea (that may not qualify as proper Sweet Tea), but they didn't have unsweetened tea.