The purpose of starting a war is to extract concessions from the other side that you were unable to get through diplomacy, not to kill a lot of people because you think they deserve it. So far Iran has not been willing to make any concessions that it wasn't willing to make before the start of the war, and has shown that it can disrupt Gulf oil exports, which it didn't do prior to the US starting the war. Nothing has been achieved besides pointless bloodshed.

Iran was attack as it was making concessions.