Nobody performs the ancestral rituals to get enlightenment! that is definitely outside the domain of ancestors... but it is said that ancestral rituals can cure diseases, solve financial problems and relationship issues.
In this age of science and technology, it may be difficult to convince oneself of the need to do something to honor the ancestral spirits (whom we can't see) and the benefits of doing this.. Science has not proved the existence of a soul (or consciousness) which is different from the body and mind.. The theoretical physics (as we briefly discussed during our last meeting) does not look at the Observer, in spite of recognizing the "observer -effect". How the firing of neurons in the brain is getting translated into emotions and intelligence is unexplained by science, yet. The fact that the death of the body means nothing...and the soul continues to exist in a different form, is not proven by science yet....but we can't wait until science proves this :) Looking at the ancient technologies (see below), sometimes one would feel that our science is still in dungeons and has ways to go.
Science has indeed proved the gene connection with our ancestors but not yet the soul connection.
"The belief is that our ancestors influence every aspect of our life and they want to help you to succeed. Their blessings are powerful and can bring Divine solutions to your problems. Offering Tarpanam to our ancestors o can help release them from their trapped condition on the earthplane, making them happy and more available to shower their abundant blessings upon us."
"it is said that if we are facing any unsolved problems, without any reason, then the answer for you is Tarpanam. This ancestral offering can appease the restless souls of our ancestors, who may be creating problems in our life"
"it is said that majority of our thoughts come from our ancestors and one can change them by honoring the ancestors..and every aspect of life can improved.. Certain familial curses can run in families which can become major impediments to your happiness and prosperity. When appeased with prayers, our ancestors can become our greatest benefactors"