I feel the same (e.g. student's lunch in the uni cafeteria is 2.40€ with soup, proper main dish with salad, and a piece of fruit), but then again like someone else points out they also eat that way when they don't have work, which indicates it's not just to save time for your employer (which I'm sure is also part of it, and kind of sad, but still). I'll chalk it up to cultural differences, in part, and also in part to the generally stressful, time-pressed modern life, which only seems to get worse each passing year, as the demands of growth capitalism get ever more cutthroat.