It's the fourth largest food crop in the world.
And not terribly un-nutritious, though I found that I have to be pretty darn close to starving to want to eat them two days in a lunch-row, despite the fact that Americans do eat about a potato a day on average.
Mine are mostly in chip-form, though. Actually, I hardly eat potatoes on purpose.
It's a cheap way to eat, so I'm trying. I have 24 ounces of them to get through before all the eyes grow.
Bonus: displaces salty oily processed chips in diet (but grants notions of "hmm, what if I sliced it up and fried it?" — because cravings are not abated by logic or full stomachs).