The first reason is that these diet sodas may not work well. In fact, many people still can't lose weight or lose more fat after drinking these sugar-free bubble waters, because those sugar-free bubble waters don't have such an effect and can't make themselves enjoy better.
The second reason is that these sugar-free bubble waters are not necessarily beneficial to the human body. In fact, these diet sodas are not necessarily beneficial to the human body, and there is no good evidence to prove whether they are really beneficial, but there is no evidence to prove that these sodas are harmful. The third reason is that these sugar-free bubble waters are low in cost. In fact, the production cost of these sugar-free bubble water is still relatively low, not as high as we thought, and there is no relatively high technical content, and it is not difficult to make.
All in all, I think this is really an IQ tax.