well, there are urban lbj great society ghettos and then there are urban hi tech hipster ghettos. the aggregate relative income levels are vastly different. the hi tech hipsters generally support themselves. and apparently because of lifestyle choices they actually don’t produce many children despite the prevalence of casual sex.
beyond this, there are the suburbs and the rural areas. it is important to make a distinction, because there is a theory that although the middle class currently resides largely in suburbs, that the suburbs will be the lower class ghettos of the future, due to increased cost of non-renewable liquid fossil fuels (cf james howard kunstler, etc.).
anyway, i agree that people should not live on the backs of other people at any time, if that is what you are getting at. in any case, i think, and i believe most rational people would agree, that these are much larger concerns than the presence or absence of the practice of occasional casual sex, and that there may not necessarily be a direct causal link between the two in most cases. i am not saying that occasional casual sex might not lead to problems, but that the people who practice casual sex without fully considering the consequences usually have bigger fish that need frying and “fixing” their custom to have casual sex together will generally not “fix” the other (and generally larger) problems in their lives.
Seems to me that the people most at risk are hearinq the buzzwords used to justify casual sex and takinq those sloqans to their natural conclusions without botherinq to think with their upper head about the consequences. As lonq as society lets their choices’ consequences fall on everybody but them, they see no problem with actinq like animals - which is basically what the buzzwords say is everybody’s “riqht”.