Why is mining virtually unlimited, while tree harvesting/nibbling/milking/squeezing are capped? Mining doesn't use that much energy (admittedly, the resulting grinding does), so this doesn't even put a sort of hidden cap on it (like, say, singing to butterflies, which costs an absurd amount of energy for something that seems way easier and more fun than milking a butterfly).
I don't have any strong feeling about whether it should or should not be this way. Just curious about the design choice. Do we need boatloads of ore floating around the game? Should I be stocking up my alchemical kit with a billion of everything?