Nothing has done more to diminish the quality of life for the US middle class through higher housing (land) costs, competition for jobs, low wages, greater poverty, mortgage fraud, medicare fraud, crime, disease, cost of public schools, cost of college, depletion of resources, burden on the taxpayer and overall congestion than the INCREASE of and change in the nature (more poor, more criminals, e pluribus multum) of the POPULATION since 1965, driven almost entirely by entry of migrants and their descendants (immigrants, h1b visa holders, visa overstays, refugees, etc)
Because we are overpopulated, millions of young people graduating this year will never be able to buy a home in the town where they were born. What sort of person wishes for that?
The high price of housing is a major factor in poorer quality of life for the middle class and the poor. Population density is the main driver of the price of land, and thus the price of housing. High immigration is the main driver of population density.
See, for example, Immigration and the revival of American Cities by Jacob L. Vigdor for the Americas Society/Council of the Americas and the Partnership for a New American Economy, in which he claims that more than 40 million immigrants currently in the united states have increased housing prices nationwide by $3.7 trillion. Or, get the population and housing price data for 1900 to 2010 from the Bureau of the Census and do your own analysis