Sometimes, when I am walking in the organic food shop in Heidelberg to buy some Tofu sausages, it strikes me, how grumpy the salesperson especially in these shops are. One would think, the company of organic vegetables and meat made of happy cows, living in the open country before their unpleasant death (their point of view), would elevate these people to a higher level of happiness. The opposite seems to be the case. I can't see the reason, but this is my personal experience. Have to build up a plausible theory, anyway.