Kids and sweets... One of the ways to make crappy sweets less attractive to them, is to give them really good quality, healthier ones when they do have them (my kids are teens to preschool, and this works fairly well because they are surrounded by junk food at every turn, and need to learn to deal with it).
The toddler gets 85% choc, just like the rest of the family, just a square or two, sometimes melted over dates (these are great with coffee btw), yes, a sweet treat, but strong flavours which is the important part- the teens, who make a lot of their own food choices now, think "normal" chocolate tastes terrible.
IMO, although sugar is bad, it is not the devil (in small amounts anyway) wheat is much worse- and the combination of the two in processed foods is deadly.
An interesting mouse study last year fed two groups of mice a very high carbohydrate, low fat diet. In one group, the carbohydrate was from gluten containing grains, the other group had the same amount of carbs, but with no gluten containing grains.
Both groups of mice got fat, but the ones eating gluten containing grains got much fatter, and very sick with diabetes, and lots of inflammatory diseases. I thought that was very interesting.