That is a hard one for any one of us to come to terms with when we start this journey... the sad part is, we did not appreciate, not did we realize that we were having fun.
I think the problem goes beyond our control, it is part parental habits and teachings (if they serve McD's, TV dinners, chips etc.), part peer pressure, part social engineering and conditioning (media among other things), part environment and part what is handy and available.
We can change our own habits once we are old enough, unlearning what we have been led to believe or taught; we can ignore peer pressure or change our friends; we can ignore and unlearn social engineering and conditioning and recondition ourselves, we can also change our environment to a point,
In the end do we have total control over the situation? Probably not. On the other hand, I suppose I could drop out and go on a walk about. There is plenty of food for the taking in the wild, AND it is alive! Then I would have some control, excepting for the plants ingestion of environmental toxins from the air and rain.
I do not mean to discourage anyone, we can always make better choices!
Speaking of which, does anyone know of a good resource for learning about local indigenous wild food?