Werewolf-
I believe in a happy middle ground of growing the right types for the environment they are grown in, in the best soil, with chemicals applied as needed but not in over abundance. This is how I set up my gardens and I gurandamntee you the vegetables I can produce in my back yard are often times bigger, healthier, better for you, and taste better then anything you will find outside of a speciality store that sells basically the same thing.
Most modern mega farm varieties are bred for looks, size, ease of growing, and the ability to ship and hold well for a long time. Nutritional value is of second concern for most of these strains, with the exception of some staples such as wheat or other grain where they come in a closer second. Flavor is often a distant third.