I'm not saying I agree with this at ALL, but back when I was a kid Mum didnt have much of a clue about nutrition (at all haha). So.... my little sister used to get green cordial (strong) or cooled, sweetened milky instant coffee. Yep. Coffee.
We also were never taught to drink water. If I was thirsty, I drank coke or choc milk, that was just what we did and those were the options presented as normal. By the time we got to Australia, and I was old enough to understand better, I had a 2L a day full-fat coke addiction to deal with.
I think it's pretty wrong and wouldnt do the same for my kids... but... I am pretty sure both my sister and I have turned out both quite normal and reasonably intelligent, and both perfectly average BMIs. I still shudder to think back to those days though....
You should hear what we used to eat Interestingly, my sister and I both now really dont like junky foods or much in the way of sweet drinks. Almost like we overloaded on it as kids and are now driven to healthy stuff.