It is a commonly used argument that the lives of poor people are very hard and unpleasant and that dealing with the hardships sucks out all their energy and brings down their spirits so they can't take advantage of all the opportunities that middle-class people have to improve their situation.
The problem I see with this reasoning is that if you consider the entire range of standards of living which people had throughout history and geography, with maybe middle-age European peasants on one end and say Larry Ellison on the other, then on this scale, the standard of living of contemporary American poor is very close to the standard of living of the reasonably well off. From the point of view say anyone in communist Poland, as well as at least a billion people living today, what you call poverty would seem like mind-blowing opulence. On the other hand, I rather suspect that for anyone featured in The Real Housewives of New York, the lot of doctors and software engineers and struggling janitors alike must seem like horrifying wage slavery.
So, to claim that there exists a standard of living threshold, and that below this threshold life is objectively hard, whereas above this threshold it's easy, and that it so happens that the line lies between the poor and the middle class in contemporary America, you have to believe that we're looking at a very unique time and place. Of all the possible values that the threshold could potentially have, what are the odds that it would actually fall within this narrow range you're looking at? A hundred or maybe even fifty years ago in the US (and much more recently in many countries around the world), almost everyone's standard of living was way below that of contemporary poor. Do you think all these people were equally as incapacitated by the harshness of their lives, unable to make rational decisions and work to improve their lives? If the civilization does not collapse for one reason or another, chances are in fifty years time even the poor will have the standard of living as good as wealthy people have now. Do you think the poor of the future will not suffer from this ten-people-in-a-room-screaming effect?