Every diabetic once thought that. They are entirely natural in response to elevated glucose levels. But they may have a cumulative effect and very often do. Eventually the body can't cope easily. Then the choice is whether to cut back on the carbs to avoid meds or just go for the meds. Some such as myself choose to maximize the probability we don't have to make that choice.
Or it may follow the progress of once-healthy individuals, as in a reference I gave above. One big problem with our ANF Nutritional Experts isn't that they study sick or healthy people. It's that they don't study at all.
A bit of clear non-binary, analytical thinking on your part would tell you it's not an either/or choice and that there's a critical difference between a glass of grape juice and a glass of red wine. It happens that I drink tea and coffee daily as well. Basically, you don't have a clue and aren't competent to have a discussion on this subject.
Again, nobody is saying or has ever said anything about excess. Lemme repeat for you:
First, the "excess" argument is one of our favorite straw men. @scubascubarefuted the whole CIM (carbohydrate insulin model of obesity) with this gem: eating too much cheese will make you fat. That's it, then--get nekkid! Lemme join in: Strange but True: Drinking Too Much Water Can Kill.
But you haven't defined excess according to a specific individual's metabolism. You don't actually even know what is for yourself, let alone anyone else.
Nor have I cobbled together any theory to suit myself. I follow well-established, published, authoritative, systematic theory. Your opinions don't rise to cobbling together any theory, since you lack any evidence for doing so, just a spin of the same ol' congenial beliefs we've all heard before here.