Interesting opinion: Fixed fines are inherently unfair to the poor. But prison sentences are inherently unfair to the rich. After all, if you already live in a crowded slum much like a prison cell, and your life is prison-level boring and oppressive already, then going to prison barely costs you anything. But if you live in a mansion and spend all day indulging in the finest luxuries on offer, going to prison is a massive decrease in your quality of life. (source: https://slatestarcodex.com/2020/03/30/legal-systems-very-dif...)