First of all, there is no daily recommended value on sugar because that value is 0.
Then, a can of regular Coca-Cola (and most sodas) has about 38g of sugar. 38g doesn't sound like a lot, but would you take a cup of coffee with 8 teaspoons of sugar? That's what 38g is, 8 teaspoons, for a single can. Many kids drink multiple cans a day, with sugary cereals, pancakes with syrup, snacks, and adding all that up they end up consuming over 100g and end up severe obesity and diabetes.
Then, a can of regular Coca-Cola (and most sodas) has about 38g of sugar. 38g doesn't sound like a lot, but would you take a cup of coffee with 8 teaspoons of sugar? That's what 38g is, 8 teaspoons, for a single can. Many kids drink multiple cans a day, with sugary cereals, pancakes with syrup, snacks, and adding all that up they end up consuming over 100g and end up severe obesity and diabetes.