i don't think it is a right question. it's like asking why did we evolve to get high on morphine? sure, there definitely are evolutionary benefits to being abl

i don't think it is a right question. it's like asking why did we evolve to get high on morphine? sure, there definitely are evolutionary benefits to being able to taste sugar and like it, as that will help you to spot nutrients, but this has little to do with the way we industrialized sugar production and consumption in last 200 years. rice, wheat and potatoes are not even sweet but in some countries those are primary sources of glucose.