That really depends on whether you think that Iran were working to get nuclear capability. To me, it's obvious that they were. Why wouldn't they want parity with their regional enemy?
There is also the continual threat to our interests abroad and the promotion of terrorism at home.
I don't buy this stuff about looking good at home or distracting from the Epstein thing. This was the culmination of a strategy that has been in works for years.
In WW1 and 2, America were compelled to change their isolationist stance to get involved in conflict. That convinced them to become proactive rather than reactive. We had the war on communism and now its about China and the Islamist threat.
However much you prefer pacificism, history has shown us that doing nothing is sometimes the worst choice, at least in the shorter term. The long term is not for us to worry about. We will be dead.
As far as putting my son in a war. I would never encourage him to join the army but in a major war, he would be drafted. I wouldn't get a choice.