It’s punishing ordinary and innocent people of Iran for its government actions. It’s also hypocritical because you don’t punish Israelnfor it’s hunan rights violations, or Saudi Arabia, or Colombia. Even though those violations are far more severe.
The take away that I get from your post is "sanctions are immoral because they make people suffer - the only way they could be moral is if you make more people that I don't like suffer".
You just mentioned US allies, by the same logic the US should place sanctions on its own states and government due to their severe human rights abuses.
