When did I say that, or even imply it? I made an analogy to medieval society, and no one thinks that it was the peasants' fault they were peasants.
Also, be very careful about sentences like "The middle class has a culture of spending most money as soon as you earn it." There are certainly parts of the middle class that are like this. We all know the concept of keeping up with the Joneses and overextending credit in an attempt to do so. However, there are also large parts of the middle class (and, again, the lower class you so ignore) where it's not "culture" it's "necessity". Sure, maybe some could survive on 20% less but at the cost of things you might take for granted--living in a safe neighborhood, eating healthy food, or having health insurance. But, no, surely it's just a culture of unnecessary spending.
It may not have been your intended message, but it's certainly the one that comes across.