Came across this post a little late but Lazy, I think you're right. Personally, I never cared for raising spuds because I hate hoes and I hate hilling potatoes. That and the fact that after all the work, I'd spot some guy in a pickup sitting by the roadside selling them for $3.00 / Cwt sack. $12.00 for enough spuds to last the winter seemed much more reasonable to me than all that work. Mind you, that was the price when I was a kid.
Also, I've always got some potatoes from the store that are sprouting in the spring. Never had a problem getting to come up. But I can't seem to find my hoe so the weeds usually outgrow them.