You could have just as well said "War is as old as government, skeptics or not. 'A peaceful world' in the absolute sense has never and will never exist, and talking in absolutes isn't helpful etc. etc."
I'm open to the idea that trade policy is sometimes useful but such a defense of it is facile nonsense. The ubiquity of something across time and space doesn't make it good or pragmatic or savvy or endow it with any other nice quality. Some things, like war, are basically bad, and at best perhaps necessary in some very limited situations.
