Going back to the original title, I don't think men are not interested in sex. They are afraid if the consequences of sex, as most know, you will be a paying visitor to the child if that is what mom wants, in particular, if not married. Men tend to be analyzers. If the average CS order is $500/month, then the CS for 18 years will be $108,000 + daycare + medical insurance....and that's before they've spent a penny directly on the child.