...except that Iraq did, and they were invaded. Libya did, and their leader was overthrown. Iran didn't, and they eventually got a negotiated settlement that left them with some nuclear capabilities. North Korea thumbed their nose at "us", developed and tested a bomb, and "we" sent them shipments of food and fuel in return.
Soooo...maybe not such a crazy motivation after all? I realize each case is unique (Gaddafi's fall wasn't directly linked to his compliance; Iran has numerous proxies operating on its behalf in the region; nobody wants a hungry, angry North Korea attempting any sort of military action, nuclear or no), but at least in the case of Iraq, "we" really screwed the pooch.
It's going to be at least a few more decades of good behavior before "we" can talk, again, about "minimizing nuclear states" and expect any non-nuclear states to take such talk seriously.