In all seriousness, when I was a kid growing up in the '70s and '80s, Doritos were like the most awesome thing ever, and I loved those things. Doritos, Oreos, Pringles and Fritos were my favorite pleasures on earth.
Two things have changed since then. First, I bet if I could go back in time and look at that "big" bag of Doritos I used to savor for a month or something, it was probably only a little bigger than a modern "big grab" bag, if not the same size. Second, I only got to eat any of the above foods once in a rare while, because they were "too expensive" to keep on hand. My staple diet growing up was home cooking from either my aunt or my mother.
We all need more home cooking, and less junk. Junk has its place, but too many of us make a staple diet of it, and I'm pretty close to being as bad for this as you can get. Some weeks I literally live on Doritos and Dr. Pepper and never have a real meal at all. Imagine, if you will, how it could possibly have come to pass that I am overweight, and about to turn obese. It helps nothing that I earn money by putting my ass in a seat and doing very little physical activity.
Unless you're a porn star or an athlete, there's just no money in physical activity.