This method of vegetable gardening is what I prefer. As you might have guessed, it doesn't involve digging. This method is particularly suited to older people or people with physical disabilities. But I just prefer it because I think it's better for the soil.
When soil is turned over it destroys the soil structure. When you create a no-dig plot you are not disturbing the topsoil at all, this means that the soil microbes, worms and creatures can continue doing what they do best in your garden.