The "nation state" is a tool in the hands of imperial powers that best serves the interests of "military-industrial complex." As simple as that. More absurd is the concept of a "secular state" that requires diverse groups of people to live together without any religious differences. But then why people were divided, in the first place, in the name of religious and or ethnic identity. One glaring example is that of "Partition of India" where Muslim and Hindus were granted separate states on the basis of religion and still both Hindu, Muslims are living together in both countries. And conflicts are now going on in the name of nationalism. In other words, "nationalism" is now a new religion.