There are no "good guys" in real-life. If you as an individual revile proxy conflict, assassination of dissidents abroad, torture and summary execution, then it's hard to stand on the American soapbox and demand change. Many Iranians still remember SAVAK, and are told stories of the last time they tried nationalizing their resources.

The US doesn't need an interventionist policy with Iran any more than we need to invade North Korea. Israel needs it though, and their entire strategy is to risk American lives for their meaningless expansion campaign.