>Uhm, that was 60+ years ago.
How old are you? Are your parents still alive? Are your grandparents?
Surprise surprise, when you overthrow a country's democratically elected government to grab some oil, people tend to remember it for a long time.
What's more is, ordinary Iranians don't particularly like their government. Iran was a moderately religious country, not fundamentalist, before the Revolution, and for the most part, it still is. Iranians are educated and intelligent people.
Iranians know that when they vote, their votes aren't worth much. They know the Council and really, the Supreme Leader call the real shots. But they still vote, and in larger numbers than Americans, primarily to demonstrate that they have faith in their government, and they would rather it exist than not.
Most likely, Iran is going to forget the unspeakable harms the United States has committed against it as its people age and the pain of living under a foreign power's puppet dictator recedes from the national consciousness. And when that happens, Iran will liberalize of its own accord, and all of America's saber-rattling and sanctions will have done nothing.
Iran does not need to make an enemy of the United States. The United States made an enemy out of Iran when it committed acts of war for the sake of corporate profits. Iran just hasn't forgotten.