No one who wants to be healthy would knowingly spoon 15 teaspoons of sugar or its equivalent into a drink.
But people do it unknowingly every day, even several times a day.
The Poison-Industrial-Food Industry has to get rid of its products somehow.
Historical note:
At the same time the British Empire was ramming its India-grown opium down the throats of the Chinese and destabilizing the world’s textile producers with cheap Manchester finished cotton, it was addicting its own population to another of its imperial products: sugar.