Cohabitation & divorce -- there is a correlation

How many computers or cars do you think Toshiba and Toyota would sell if they didn't let you test them out first? Who in their right mind would make a big commitment of purchase without trying it out first?

But don't we do the same with marriage? We ask young people to make one of the biggest commitments of their lives -- rivaled only by their decision to become parents -- without any prior experience of what marriage is actually like.