I am inquiring all these for myself. Is Pitri within the boudry of RESPECT AND DISRESPECT? Isn't it beyond the grip of human minds? Do they really care about respect or disrespect? I do not want to rely on any books or any authority. I want to test is myself. Is it possible? Shiva says attachment of any form- including the desire of God- can be a barrier in the path to Nirvan. I do not understand the fact that ,on one hand, Lord shiva ask us to give up attachment, the practice ,on the other hand, encourages attachment-attachment with ancestors. I see a conflict.