I think it depends on what you consider a weakness of human nature. We're susceptible to sugary foods, even though they're bad for us: are bakeries frauds? If w

I think it depends on what you consider a weakness of human nature. We're susceptible to sugary foods, even though they're bad for us: are bakeries frauds? If we suddenly stopped feeling emotions tomorrow - if we all started acting totally rationally, how many industries would fall apart, even though we're theoretically way more efficient? The same goes for our need for convenience and luxury. We could have all survived on brick phones or Blackberries, but we now employ so much of our population making slightly-more-luxurious iPhones. At some point, these impediments are what cause us to grow.