Ready-made/highly processed foods and "empty calories" (fast food, snacks) are, at a guess, far more common these days, and also far cheaper than the healthier alternative to snacks.

Natural produce is also missing a lot of its previous taste, texture and smell. I know for a fact that there is a world of a difference, during the season, between a tomato from a random Italian supermarket and a British Tesco "Value" tomato. I will be drawn to eat the former without so much preparation as even washing it; the latter I will have to force down my throat and eat it with ketchup to mask the papery texture of the flesh and add some taste, any taste at all, so that I can sense I'm eating something.

Gluten intolerant and/or lactose intolerant parts of the population are also basically screwed. I am both, and most food that has an ingredients list longer than 5 lines is poisonous to me. I am left with either the more expensive "free from" foods that skip one or both of these ingredients (and costs Nx what the usual version does), or buying single ingredients to cook my own food from scratch.

If one wants to have an actually nutritious diet, then the cheap "food" being offered today ain't gonna cut it.