Agreed, my wife and I had that conversation recently, as it happens. Though, for some things, there are other benefits. Herbs is the best example, even the fresh, packaged herbs that you can buy at a grocery will be noticeably not-as-good as something that you picked fresh in the backyard 2 minutes ago. Dill, basil, thyme, mint, what have you. I've found the same to be true of things like bell peppers and jalapenos.