I don’t understand the logic behind this. A man can lose his job then how can he make court ordered payments for kids and wife? And then putting the man behind

I don’t understand the logic behind this. A man can lose his job then how can he make court ordered payments for kids and wife? And then putting the man behind bars is detrimental to society because a divorced man would be experience depression and likely lose his job. Punishing such a man is not good for society.