What I really love about Revenge of the Sith is that it ends the same way as Return of the Jedi; with people choosing to love Anakin despite everything he’s done.
In RotJ, Luke could have left Vader behind out of anger or lack of compassion, but he chose love instead. He didn’t have to help him, but he chose to. “You’re coming with me. I’ll not leave you here, I’ve got to save you.”
And RotS echoes that same message with Obi-wan and Padme both loving him despite the betrayal and his horrible actions.
Obi-wan could have chosen to hate Anakin for all that he did, he could have answered Anakin’s hatred with hatred of his own. But when Anakin screamed “I hate you” Obi-wan answered with “You were my brother, Anakin. I loved you.”
And even Padme, whose heart was broken, chose to love him. “There is good in him. I know there is still…”
What I love about Star Wars is the message of love and forgiveness, even for those who have wronged us in unthinkable ways.