Ideal forgetfulness?

Nandri marappadhu nandrandru; nandralladhu andre marappadhu nandru - Tirukkural Never forget a favor; immediately forget any injury - Loose translation This thing about gratitude really vibes with me. Who does not like receiving a benefit that one had no right to expect? And a favor is not something that you have bought and paid for, and can complain to customer service if you do not receive