Adding to the varieties of other explanations countering your &quot;one explanation:&quot;<p>1.) Time. Although I&#x27;m (perhaps overly) sensitive to which foods are healthy and which aren&#x27;t, I often find myself eating sub-optimally simply because I can&#x27;t muster the time&#x2F;energy to make something healthy, do the resulting dishes, etc... And veggies can be some of the most labor intensive. Or, you want a quick snack that&#x27;s also really healthy? Here&#x27;s $5 for a small bag of kale chips (see &quot;Cost,&quot; below.)<p>2.) Skill. It&#x27;s taken me a while to learn to cook well enough that much of what I make is at least on par with (non-gourmet) restaurant food.<p>3.) Cost. Compare the beans with sugar to higher end -- organic, in particular -- varieties.