>I'm glad Europe, Asia, and Australia all said no to helping liberate oil from Iran.

I didn't expect any help from them.

>Also, it's so weird seeing Americans wanting to leave NATO because NATO didn't help invade Iran

That's not why I want to leave NATO.

>whilst forgetting that NATO is a defensive pact.

It didn't look very defensive when the Europeans dragged NATO into Libya.

Nobody got "dragged" in. Being that NATO is a defensive pact, no country was under any obligation to participate. There is exactly one time in history when a NATO country has actually invoked the treaty that requires help from other members, and I'm sure you know which country that was.