where's the sweet tea?,.

I feel like unless you're in the South, most restaurants don't sell sweet tea because it's not what the culture of the area drinks. I'm from the Midwest and LOVE sweet tea but have to resort to dumping sugar in my tea because most people in the area prefer regular tea. I don't think that it's a good enough reason to exclude sweet tea from the menu, but that's why they don't. It probably takes just enough more effort to make sweet tea that not enough people are going to drink that they just feel that it would be a waste of money.