19. Save money
One of the biggest reasons people give not eat their vegetables is that it's too expensive at the grocery store. This is sometimes entirely true, and some stores want to charge you $1 for green bell pepper. It is costly to cook a meal from scratch with the required multiple of each dish. You can always get discounted vegetables from the wholesale farmers' market. But if you don't have one in your locality, your only option may be to grow your fruits and vegetables.
Some people grow lots of vegetables; they never have to buy the product in the store. Of course, this will take a lot of time and work before raising the bed or a greenhouse to give you effect year-round. But if you decide to use it, this could save you hundreds or possibly thousands of dollars in a few years.