Englishman, our society is actually somewhat hypocritical on this issue. On the one hand, they’ll throw the guy into jail for decades. On the other hand, real infidelity is just something to tease someone about.
Modern society punishes based on the need to deter, not what is actually earned. You can get a harsher punishment for borrowing too much from the bank than for a murder. In times of Beis Din, when they saw the need, they were also capable of punishing extra harsh punishments for a deterence.