For god's sake let us face reality here. How many people go to the temples just purely out of love for the lord ( காதலாகிக் கசிந்து கண்ணீர் மல்கி) ---not even thinking about a request buried in the depth of their minds? Those are few and far between if we want to be honest to ourselves. So there is a business transaction involved. The famous late novelist Kalki used to write "Percentage transaction in prayers". Although it had a tinge of humor it was real. I am sure this discussion will go in cycles interminably.