OP, I think that your idea of the traditional norm for motherhood is badly informed and based on prejudice more than evidence. I also think that the way you frame your views is overly aggressive. It's possible to disagree without starting a fight but your statements here seem deliberately aimed at doing the latter.
I'm very happy for people who want, and more crucially, can afford to do so, to be SAHMs. But it shows a real ignorance of social history and anthropology to suggest that those of us who go out to work are doing something radically different from previous generations.
Women from the working classes have always worked inside and outside the home, albeit in low-paid low-status professions (cleaning, mending, factory work etc..). Contrary to the rose-tinted views of middle-class 1950s relicts and vast swathes of the modern media who prefer to deal in cliches rather than facts, the majority of the population have not always been able to support a family on a single wage.
Historically, the extended rather than nuclear family was the norm and grandparents, aunts and sisters would pool and share childcare resources. Now that most of us live in ways and places that mean we don't have access to these support networks we have to recreate them as best we can using childminders, nannies and nurseries.
To hold the views you do, I also think that you must come from a very different family background to me. On my mother's side every female member of my family back to my great-grandmother has combined work and parenting, usually while living with several members of the extended family, including retired family members or shift workers (nurses, cleaners etc..) Several were single mothers, widows or divorcees. Despite this, I can't think of anyone in the past few generations on that side of the family who has been on drugs, in prison, failed to complete their education, experienced symptomatic depression, lived on benefits or any of the other "negative" outcomes that the media likes to link to working motherhood.