Do grains have any nutritional value?

I'm actually in support of the Paleo Diet and live to it the best that I can. I do think, however, that they need to reconsider the "Food Pyramid." When I stopped eating grains/breads, I felt less bloated and more energized. There has even been statements that it helps/cures MS. For more info about MS & Paleo: a href="http://robbwolf.com/2008/06/04/the-paleo-diet-vs-multiple-sclerosis/" rel="nofollow"http://robbwolf.com/2008/06/04/the-paleo…/a