Except when your wife starts buying for you expensive and useless garden items for presents. In the summer, on the east side of a wall is a good place for salad greens and herbs, to avoid afternoon heat. In the winter, on the south side of a wall is a good place to get the most sun. Add a cold frame and you can grow year around, given that many salads and herbs have good cold tolerance. Fresh, flavorful, organic, yummm.