Over ast Coffee With Kenobi our buddy Dennis Keithly asks the question ‘Did C-3PO’s Memory Really Need to Be Erased?’
After Obi-Wan defeated Anakin, C-3PO relays his distress over Padme’s condition to Obi-Wan before they depart Mustafar. They definitely knew who each other were. Something had to be done to resolve this plot problem, and Bail Organa had the solution by having C-3PO’s memory erased at the end of the movie. Problem solved.
I remember leaving the theater thinking that was tidy, and that it made sense. C-3PO was a talker after all. He could spill the secret about the Skywalker children at any time. Bail Organa had seemingly inherited the droids if for no other reason than Yoda and Obi-Wan could not really use them on Dagobah or Tatooine respectively. However, the more I thought about it, the less satisfied I became with this solution.



