> Except you need carbohydrates

Your usage of need is directly contrary to the dictionary definition of need. Have you heard of ketosis?

> many things you consider "good" are also carbs, like veggies

Veggies are not good for the carbs they contain (Fiber has some value of course, but not really as a carbohydrate), but instead for the nutrients (commonly known as "vitamins/minerals") they contain in edible forms for our bodies.

There is no purpose to carbohydrates in and of themselves, they provide one energy-burning source and certain classes of carbohydrates are consumed to provide important nutrients, but the carbohydrate itself is never a high value intake.

"Never" is a bit extreme. It's almost never high value for the average programmer Joe, but super high value for athletes, physically taxing jobs, amateur runners and so on.

Both carbs value and dread come from their quick, easily convertible energy, which used to be a big plus when we were all working the land or building stuff, but indeed has very little value when we sit on our assets all day.

> Have you heard of ketosis?

Do you even lift?