Coke is amazingly popular around the entire world, though. You can go to China, India, South Africa, and find Coke for sale and selling well even though they have their own traditional beverages. Obviously sugar water isn't very good for you -- it's liquid candy, but the idea that people only drink it if they've been "indoctrinated" isn't very likely.
Ah, that's too harsh.
Sugar water tastes good. Fast food is made quickly and it tastes good. There's no "indoctrination" that happens to make people realize that.
I agree that coke has 0 nutritional value. However, the flavor is agreeable to most people.