Well, you make it to suit what YOU think tastes good... When I was growing up, my momma (who is from Indiana) kept making her tea sweeter and sweeter every year until now it is just as good as any Southern sweet tea.
When I make tea, I usually use three tea bags and 2 cups of sugar.
And I agree with everyone who won't eat at a restaurant because they don't serve sweet tea... but don't y'all also sometimes choose where to eat on who has the best tea? I will often go for Chick-fil-a or Bojangles just because their sweet tea is the best!
HOW can people drink iced tea UNSWEETENED

?
Edited to say: I'm sure that everyone has an opinion, but I think Luzianne is the only tea that makes GOOD sweet tea.