Even if he doesn't remember me, I want him to the have the best chance at getting off this planet.
I understand Sabine's hesitancy to leave him at Echo Base. Data may be scrubbed, but the idea of someone rifling through the most disastrous battle for the Rebellion — I lost a lot of friends here. I know a lot of these faces frozen in the snow. The names etched on coats. I've lived war my whole life so I understand that you need to take what you can, but — it's still difficult.
I can still feel the presence of the Dark Side left on this place. The feelings here are strong with fear, terror, and Vader's unmistakable hatred. If I hadn't had years of training, this would have overwhelmed me.