People under emphasize the addictive properties of so much of what passes for "food" in our culture, which is primarily a PR/corporate advertised culture.
Counting carbs is such a huge fallacy. It's how your specific metabolism handles a specific "food" that matters. Some people don't have any real issue with cheap shit "foods" high in carbs, or at least they don't pack on the pounds of fat when they eat them. Other people should NEVER eat the same stuff. Try taking away someone's pizza or whole wheat whatever, much less their favorite crap "foods", and you'd think you suggested drowning a baby.
It's easy to make crap because crap is generally cheap and convenient. Food is just something to shove into your face and enjoy, not something you've got any kind of intimate relationship with, spending time to prepare and understand how it impacts you personally.
Carbs are only part of the problem; look at all the soybean oil and other cheap shit oils in "food". The body processes oils/fats differently than carbs, differently than proteins. Look at all the stuff with soybean oil in it. Granted, most of it's full of carbs and sugar and crap people shouldn't be eating anyway, but it just goes to show how 90% of the garbage marketed to us as "food" is crap.
The people who cry the loudest that they are persecuted for being obese are very rarely people who have any kind of healthy relationship with their food. They buy a lot of convenient, cheap crap, shoot it up, get high, crash, and start the whole cycle over again. This is their "normal", and it's what the US food industry thrives on.