Commies wouldn't understand why two biggest democracies want to help each other. Of course, every country has their own interest but in this deal; India would gain much much more than US would. In the long run, US would have an ally in India when it would come to dealing with Russia, China, Pak, Iran, & Afghanistan.
Energy is the biggest requirement for India's constant/exponential growth. If you can't understand this simple fact, go and live in Bengal where all work that is done is unionBAAJI.