Notably, Iran did not retaliate in kind to the US sponsored Iraqi attack with chemical weapons, now considered weapons of mass destruction. This might be related to the notion that WMDs are un-Islamic, which got formalized as Khamenei's fatwa against nuclear weapons.
Edit: Since some people don't seem to believe me:
> The clock was programmed to count down from 8,411 days, corresponding to a 2015 statement by Supreme Leader Ayatollah Ali Khamenei, who predicted that "Israel won't exist in 25 years".[1][2][3] He claimed in his statement that there will be nothing left of the Jewish state by 2040.
https://en.wikipedia.org/wiki/Palestine_Square_Countdown_Clo...
But seriously, why do you think a nuclear bomb is required for Israel not to exist in 25 years?
Haven't Czechoslovakia, Yugoslavia, East Germany, Serbia, Montenegro, and the Soviet Union all ceased to exist in the last 50 years?
Are Iranians safe now?
The US put the Shah in power which directly resulted in torture and killing of Iranians, and led to the Islamic Revolution.
The US removed Iraq from the list of state sponsors of terrors specifically so that Saddam could bomb Iran, including with chemical weapons.
You sound like you’ve never heard the major arguments against your position.