Theory; the only reason why sugar, starches, and sweet things are bad is that it causes your body metabolic damage, and causes your body to over store fat, adipose tissue.

Then, adipose fat tissue is simply a sign of unhealth?

Typically we think of fat, adipose tissue, being overfat is simply bad from aesthetics perspective. However, maybe the better thought is that when you see a person with too much fat, adipose tissue, it is simply a sign that they are unwell or unhealthy.

Therefore, what we desire to see is healthy humans, not necessarily people without fat?