From the Huffington Post:

Eli Lehrer, president of the nonprofit research group The R Street Institute, says, “Marriage really does make people more careful and responsible… it isn’t at all surprising that this translates into better driving behavior.”

For example, a recent study by the Centers for Disease Control and Prevention (CDC) found that married men are more focused on taking care of their health than single men.

What’s more, Lehrer says married people are also a better business opportunity for an insurer, since they are more likely to own homes and “far, far, far more likely” to buy life insurance.