I fully agree with you, Bidare, many people spend most of their times in non-productive work like worshipping and visiting shrines where tax-payers' money is also spent in the facilities and law-order. Consider the many holy men and the sadhus who can do productive work and add to the GDP. These people are parasites.
Why cant people worship their GOD(s) in their homes? Why is the need to put up temples/mosques/churches and have fairs/processions and induce fanatism / riots / etc and add to the misery of the nation?