I would not use the adjective "depressing" to qualify human labour that respects the environment it is set in, helps populations keep living in interior mediterranean areas, and to speak about the product; help make something that has a wide field of application. In fact these zones benefit from a lot of quality rural turism because of the loop feed that comes out of grape, cork, rural area setting with life quality parameters that are disappearing all around the world. These are strong people that shouldn't be paternalized for their strong value system that preserves habitat and social condition in a strong group pattern. But that is just my opinion based on the contact I have with this sort of cultural setting. All of these things make this specialized manual labour part of a culture that warrants preservation, not arbitrary value imposition.