Is the paleo diet what we were designed to eat?

I'm not much for fad diets and crash diets. Proper nutrition is important, and I feel it should fit the individuals real needs. I believe the food pyramid could use some tweaking too. I have been cutting back more on white flower, refined sugar and processed food. I am increasing organic non-processed foods. I like peanuts and peanut products but find that almonds are better for us. A good trail mix with no sugar or salt and lots of energy is organic almonds, raisins and dried cranberries. People generally need more protein earlier in the day and should try to have their carbs later.
 
I have looked into the paleo diet, and believe that's what we were designed to eat. This diet goes with more protein, meat, fish, nuts, fruits and vegetables, and discourages legumes such as beans, peas and peanuts. I guess paleo man would have found nuts from trees. No refined foods. Of course the increase in fiber is good.

We love our local food co-op and the people there. Lots of good organic products. They have been signing in one new member per day!  http://marquettefood.coop/

So I have made some slight changes in my diet and believe it fits my body chemistry, metabolism and my activities that in include biking, running and body building. I use nutritional supplements including protein shakes. The soy has many health benefits but I'm trying whey now and I may have more energy from that. I use the protein shakes to avoid sandwiches with all the flour and carbs. My opinion is that some nutritional supplements are not safe, while others are not effective. Careful!