Or how about, you and your wife both have jobs and take care of her two kids and your two kids, and you screw up and she gets pregnant?  Let's say between the two of you, all your money is spent before you cash your checks.  She reads the tea leaves, and tells you she wants an abortion, and her mind is made up.  You want the kid, but you know what her position is.  Now THAT would be a tough one.  Who decides?  I think it is the one who is pregnant.