why would Iran not make a nuke when America keeps bombing countries that don't have nukes, and avoids bombing countries that have nukes (most notably North Korea)? They have all the incentives to have a nuke so they'll stop getting bombed. Obama negotiated to avoid this but Trump ripped it up and bombed them, so they're definitely not going to trust any agreements with the west ever again. From their perspective, their only path to not getting bombed to shit involves having several nukes. It's quite rational for them to do that.