no dude, potatoes are freakin' awesome.
Ah but without coal, no steam age, no magnificent industrial superpower that was the British Empire!
*waves flag, sings national anthem...*
yes, but coal is dirty, and in this day and age there is hardly any use for ONE PIECE. although you could make the argument that "overtime, it will turn into a diamond, just like our love." so maybe coal isn't that great, try just a box filled with poo, or a sandwich made of two pieces of card board with watery ejaculate inbetween.