Yes, I feel like they are a really potent superfood and a very natural part of the human diet, as per
http://www.beyondveg.com/nicholson-w/hb/hb-interview1c.shtml. Also, part of the solution to our current environmental crisis. People spray crops with poisons to kill insects that are more nutritious than the crops themselves! Tomato horn worms and locusts are the two worst culprits for crop destruction and they are both edible. I bet you could replace 50% of the meat in a McDonald's hamburger with insects and no one would notice ;-) .
Like it or not, you've probably already eaten at least a pound of insects over the course of your life without noticing it.
Insects provide abundant zinc, calcium, iron, niacin and protein, among other vitamins and minerals.