It's the risk-reducing position to take. Risks: disease, child support, being viewed as "used goods" and otherwise debased, wasting high-value years that could

It's the risk-reducing position to take. Risks: disease, child support, being viewed as "used goods" and otherwise debased, wasting high-value years that could go to raising a family (why buy the cow if you're getting the milk for free?), increased severity of a broken heart, wanting to avoid falling for used goods (increased divorce risk, awkward comparisons...), greater chance of false rape accusation... Note that even non-broken condoms do a poor job of protecting against herpes and warts. You can somewhat treat them, but there is no cure.