I guess the games you think are stupid depend immensely on your priors.
So we are going to ignore the JCPOA? Also, the rumor is that there is another player in the region who has undeclared nuclear weapons and refuses IAEA inspections. Should we bomb them next?
the US has been doing that in the gulf of mexico; should we be destorying the american civilization as a result?
Funding armed groups to essentially make war on your behalf does seem like a valid reason for the person being targeted to go to war.
As a general rule, if you shoot someone they will shoot back if capable.
I don't approve of war (and Trump didn't handle it well). However I also don't approve of what Iran has been doing.