Cap, you've learned something I've been trying to teach Dh for years. My mother had a lot of clay where she lived in KY. She too added sand to it, and it made a good growing medium. Here in Fl, we have quite a bit of naturally occurring sand in our soil. With few exceptions, it's not just sand. Most thing grow well in it. A few things (like blueberries) require a bit of adjustment on the pH, but not many crops do, and it's easy to adjust.
The town Dh comes from is a small town, mostly a farming community. There are miles and miles of either corn, or soy. I don't think they grow a crop every so often, to plow back under, and replenish their soil. Dh seems to think that soil is to look more like potting soil, if anything is going to grow in it. He labors needlessly to "build up" the poor soil. He adds commercial fertilizer too, which I don't like.
Normally, I make him give me a section of the garden for me to plant things I want to grow. I don't go nuts trying to enrich the soil, but I do toss the crap on the garden every so often when I clean my coops. I don't use any commercial fertilizer. After all these years, he still has trouble figuring out why I can plant the same things as he does, and my crops do better than his. I always plant watermelons too.
Since we moved here, he's been dragging his feet about getting our garden in. He's dreading having to go to all the trouble of building up the soil on his side of the garden, and putting in all the work to get it up, and going. I reminded him of how he doesn't need to do all that, but he's lapsed back into it having to look like potting soil.