"Cohabitation is no place for children" writes nationally-syndicated columnist Michael Gerson.

In a piece that appeared yesterday in the Washington Post, Gerson makes the case that Brad Wilcox, director of the National Marriage Project at the University of Virginia, and others have made. Namely, children do best in two-parent, stable, married families. For Gerson, Wilcox, and many others, they would underscore the married part.

Let's take his argument in bites.

• Being a 20-something at present is different in important ways from previous decades.
• Two markers of this change are earlier sexual activity and later age of marriage.
• In the absence of what Brad Wilcox calls the traditional "courtship narrative"--dating, marriage, children--many young people have adopted a different life choice: cohabitation.
• Gerson concedes that the link between sex and marriage is a thing of the past. However, he believes that the connection between marriage and having children remains absolutely essential.

A gross oversimplification to be sure, but you get the point. Gerson also notes:

• Marriage is "the most effective institution to bind two parents for a long period in the common enterprise of marriage."
• Age of marriage matters too---Gerson calls the early to mid-20s the "marital sweet spot" for marital longevity and happiness.
• Citing research by Wilcox, Gerson says "serial cohabitation trains people for divorce...cohabitation by engaged couples seems to have no adverse effect on eventual marriage."

That's a lot to chew on. We are anxious to hear what you think. Put you comment shoes on and get busy.