I have always believed that with something as fundamental to our well being as the food we eat, and the fact that it is a necessity, makes total sense to me to concentrate on the taste and provenance of the things we grow or buy.  With something as simple as salt, you would at first glance think there was no difference, in fact there is all the difference in the world and I firmly believe that naturally harvested sea salt whether from the Ile de Re or the Guerande in France really is worth seeking out and using.