This interesting article supports that intuitive fact.
The very first question in that article is enough to make my point. “How many lives would you be willing to sacrifice to remove a murderous dictator like Saddam Hussein?” This question was never asked, because it’s a cold calculating question that has to acknowledge as a premise that we are going to have to sacrifice lives.
Instead the discussion was in terms of an arbitrary future threat to civilization from a vague boogie man (i.e. terrorism). There are quantifiable threats associated with terrorism. Numbers. You can estimate probabilities, death tolls, financial impact. And based on that, you can make a decision on whether to go to war. But instead, it seems to me, that we instead make that decision throughout history based on emotions, such as fear, pride, and anger… It’s tragic.