Sure greed for interest can come from dissatisfaction and can cause financial tunnel vision, wherein modern capitalistic financial practices, with all their jargon and intricate dynamics, become top priority, consequently taking away from the creativity that comes from the built-in human need for innovation and reinvention, and thus impeding growth at a point where money making becomes all consuming. When the opportunity of cost becomes a tool for creating financial anxiety, the soundest financial advice would be to evaluate the cost of this perpetual cycle of unnecessary anxiety over financial satisfaction. But as it stands, this anxiety is necessary in purely capitalist economies. It's ingrained, futile but dangerous. People choose to ignore this then act completely shocked when someone like Blythe Masters reaches for the cookies. It's easier to call out on the ethics of an individual than an economic way of thought.