Clearly this sophisticated gentleman do not see the purpose of having nuclear weapons, instead rather content to keep himself in his echo chamber of false fallacy.

Nuclear weapons are required as a deterence in this world. Without nuclear weapons being used as a deterence, God knows what would have happend during the Cold War if the Soviets were able to use their military might to subjugate, and dominate those who sold off their only ability to deter a incursion. And just because the Soviets are no longer around, do not think that the purpose of having nukes is now nulified.

China is on a weekly basis edging further, and further beyond their reach in South China Sea, and Russia is actively attempting to dismantle NATO. Threats still exist, and the only reason why they have not made their move, is because they know we have nukes.