This advocacy of secularism, coming from a Pakistani, would have been funny if it was not pathetic. Pakistan is the last country to be advising us on secularism since your ill treatment of minorities is known the world over - minorities, mainly Hindus reduced from 20% in 1947 to less than 2% today, while in India, the population of minorities has increased. In any case, secularism or not, will have to be decided by the majority of the citizens of India depending on many factors, the most important being whether secularism is in the long term interest of the nation or not. If it is decided, amendment to the constitution is no big deal.