"Why?" Marty asked rhetorically.
Actually, it is not what you think. The purpose here is rather rudimentary pest control. Pyongyang is not in dire famine(not yet anyway.) When they have nothing but pine worms to eat in Pyongyang, N. Korean regime would have been already gone.
"Why?" Marty asked rhetorically.
They make a nice garnish for a tree bark and grass salad?