[Desdemona]

You seem to have forgotten the most significant factor.

The lack of single people of the opposite sex (that would be male) with the guts to ask one out on a date? Otherwise, there are many women in their child-bearing years out there who would be more than happy to help out.

[Aquinasfan]

Contraception.

[nickcarraway]

How can they factor that in in a study?

[Antoninus]

The lack of single people of the opposite sex (that would be male) with the guts to ask one out on a date? Otherwise, there are many women in their child-bearing years out there who would be more than happy to help out.

Hey, take the bull by the horns. Get on a Catholic matchmaker internet site and get crackin'. That's how I met my wife, and that's how my sister- and brother-in-law met. The result? Two marriages and two babies (so far!).