Iran is going to attack Israel with nuclear weapons (it doesn’t have) which would kill the millions of Muslims that live there, along with various holy sites dear to Muslims around the world. These two reasons are why Muslims are angry about Israel in the first place, and they’d just destroy them? This attack would also assure the destruction of their own country as well, if not by Israel than by the US. Iran is a dangerous country that we shouldn’t turn our back on, but this seems like a low probability and hardly justification for an invasion.
BTW, our previous invasion of their neighbor Iraq has only served to bolster Iran’s power and influence in the region. Heckuva Job!