"It's an institute you can't disparage"

For Frank Sinatra, 

Love and marriage, love and marriage / Go together like a horse and carriage ... 

Love and marriage, love and marriage / It's an institute you can't disparage ... 

Try, try, try to separate them / It's an illusion 

But according to this February 18 front-page report in The New York Times, "For Women Under 30, Most Births Occur Outside Marriage," in the United States apparently neither love nor children goes with marriage like a horse and carriage.  Rather, as sociologist Frank Furstenberg tries to make sense of the phenomenon, "[m]arriage has become a luxury good."  

Is this form of elective consumerism benign?  The NYT news story states (with substantiating links):

The shift is affecting children’s lives. Researchers have consistently found that children born outside marriage face elevated risks of falling into poverty, failing in school or suffering emotional and behavioral problems. 

Is this an illusion of what happens increasingly when couples disparage the "institute" and separate love and marriage?

(For the record, the Times article assumes throughout that marriage is between opposite-sex couples, since natural procreation is a central focus of the report on marriage.)

Should a society that desires to pursue justice -- by alleviating poverty, by promoting successful education, and by preventing adverse emotional and behavioral conditions, for instance --rethink its tacit approval of this non-traditional form of coupling if, as former Democratic Senator Daniel Patrick Moynihan once controversially cautioned, it leads to a "tangle of pathology?"