Forget about fresh produce or fresh baked goods or fresh anything. Canned vegetables are as cheap as a gang tattoo, and every poor person I knew (including myself) had them as a staple of their diet. Fruit was the same way. Canned peaches could be split between three kids for half the cost of fresh ones, and at the end you had the extra surprise of pure, liquefied sugar to push you into full-blown hyperglycemia.
If it wasn't canned, it was frozen. TV dinners, pot pies, chicken nuggets ... meals that can be frozen forever, and preparation isn't more complicated than "Remove from box. Nuke. Eat." Because of that, by week two, half of everything we bought would be freezer burned. Just like with the canned food, you grow up thinking that this is the way it's supposed to taste. It's not that you grow to like it, necessarily, but you do grow to expect it.
Once You Escape ...
To this day, my kids won't eat fresh green beans. There's such a huge difference in texture and taste compared to the canned version that they're honestly like two different foods. None of us will eat homemade macaroni and cheese. If it doesn't come out of a box, it tastes weird. And the list is a mile long. We've eaten these things for so long, we've grown to prefer them to the fresh version.
People who have never been poor love to point out overweight people in the ghetto and sarcastically exclaim, "Yeah, it really looks like she's starving!" And they have no idea that the reason many of them have weight problems is because everything they're putting into their bodies is dirt-cheap, processed bullshit. Grab a TV dinner and look at the nutritional information.
Fresh food is expensive and takes forever to prepare. It goes bad quickly, so it requires multiple trips to the grocery store per week, which is something most impoverished people can't do. And since all of those time-saving frozen meals are high in salt and fat, they take up residence in the expanding asses of the people who can't afford anything else.
When you finally get to the point where you can afford those grocery trips and fresh ingredients and have the time to prepare them, your taste buds freak the fuck out. They're not used to it. Vegetables are supposed to be squishy, aren't they? Is chicken supposed to have this texture?
No, it's not like you're eating food for the first time, staring at asparagus in wide-eyed bewilderment, not knowing whether to put it in your mouth or rub it on your skin until it absorbs right into your body. But a lot of this new stuff sucks by comparison because it's not what you've been trained to eat -- the flavors and textures are all wrong, and there's a real temptation to keep eating the same shit until it stops your heart at age 43.