Answer: You, and only you decide and know what kinds of fertilizers and pesticides come in contact with your food. It lets you control the time and place to harvest your food. Vegetables and fruits that ripen in the garden have way more nutrients than some store bought vegetables that must be picked early; otherwise it rottens. Gardening basically means you pick up the fruits/vegetables right after it is fresh and delicious so it is better in every way. Imagine a scenario where a chef makes you pick between a 6 hour old burger meat fried and ready to eat to put in your bun or a freshly fried burger meat. it seems like an obvious question does it not? same goes for gardening and store vegetables!