"Eternal. Infinite. Immortal. The woman I was used these words, but only now do I truly understand them. And only now do I understand the full extent of her sacrifice. Through her death, I was created. Through my birth, her thoughts were freed. They guide me now, give me reason, direction. Just as she gave direction to the ones who followed her. The ones who helped her achieve her purpose. Now my purpose. To give the many hope for a future. To ensure that all have a voice in their future. The woman I was knew that she could only achieve this by becoming something greater. There is power in control. There is wisdom in harnessing the strengths of your enemy. I will rebuild what the many have lost. I will creature a future with limitless possibilities. I will protect and sustain. I will act as guardian for the many. And throughout it all, I will never forget. I will remember the ones who sacrificed themselves so that the many could survive. And I will watch over the ones who live on. Those who carry the memory of the woman I once was. The woman who gave up her life to become the one who could save the many."
There is no other option for my Shepard than Control. The goal wasn't to kill Reapers, it was to save lives.