Offering pinda in pitrupaksha is a medium of repaying the debt unto ancestors. So that the onward journey of your near and dear ones is pleasant and free of conflict and so that they attain a good status after death, the rite of shraddha is performed.

Spiritual practice for God-realisation prescribed in each era has been different. Chanting is the best spiritual practice prescribed for Kaliyug (Era of strife) by saints.