Wow, you are going off on a tangent, bashing every sentiment you can lay your hands on. Here's a question, why does karunanadhi suddenly get so emotionally attached to a cause? is it because he's getting a ton of money lining his pockets?
I do agree that myths old and new should not be used to make governance decisions. By that token, the Aryan invasion theory has been trashed as a product of imperialist propoganda. Don't believe about Aryans and Brahmins, the so called 'backward' castes are equally culpable. In India poverty is the only crime. And the backward/forward/scheduled tribes everyone's focus is on getting themselves rich while keeping their brothers poor. Casteism is the new socialism. Just as socialism bankrupted India in the 70s, wrong footed caste chauvenism will destroy us today. We elect absolute criminals because they belong to our caste.
As for Hindu myths, please do understand that the myths give us valuable lessons in morality - that is their objective. Other than that, you're free to believe in whatever you wish, but don't impinge on my beliefs. The SS project wlil destroy a valuable natural reef barrier. It will also cost more than its worth. We can get alternative routes (between rameshwaram and the mainland) that give better economic returns. However, that would leave less money in the hands of the politician... and thats a serious crime in today's India.