Yes. For man to have the pleasure of partaking in cocoa products, he must be willing to experience some inconveniences. While the diseases spread by the mosquitoes are indeed harmful and deadly, the hubris that man will devastate his environment for a little comfort is far more damaging to the entirety of creation. Should man decide to shake his little fists at the universe in petulance, the universe may give him such a bite that he wished he never took his hands out of his pocket.