• Most guys in the society don't want to commit adultery and most women see adultery as wrong (religion, modesty, restraint). This protects against cheating with a culture of shame for offending the bond of marriage. This is not our society.

  • Men are allowed to protect their women from getting cheated on and are allowed to retaliate on the offender. This is a deterrent of punishment for the offender, and means that husbands have some sort of authority over their wives that isn't neutralized by the state. This is not our society.

Therefore, marriage is a stupid option. Cheating has no punishment in our society.