Why would it be better to preserve an enslaved humanity than to call the bluff and fight back? We need to be prepared for global nuclear war if we want to defen

Why would it be better to preserve an enslaved humanity than to call the bluff and fight back? We need to be prepared for global nuclear war if we want to defend ourselves, otherwise we are just posers and might as well give up now. Deterrent doesn't mean anything if you wont actually use it if necessary