In a very bizarre way, Dark was reminding Xander of Milo... and himself. Because things had been hellish, then that was all they'd ever be. Because of that preexisting bias, when they looked around, they saw the bad. The unfairness. The injustice. Not to say it wasn't there, but it was like wearing red-colored glasses and looking for red things. The world was unjust, but that wasn't all it was. It could be a nasty place at times, no arguing that, and yet...
Now that he, Xander, was in a safer, more loving place, a place that practically forced him to be more open-minded and less willing to jump to harmful conclusions, he could see more, like he'd taken off the glasses, but he was still adjusting. Most of that was thanks to Daizi, who had lived her own version of hell as a child. It wasn't anything at all like Dark's, but that didn't make it any easier to live with. That didn't make the hurts any less. Yet she looked for and therefore saw the good things. The bright things. The happy things. The world could be truly beautiful, he was learning. It had so much good in it.
The world might not be "fair" by human standards, but maybe that was the problem? He fidgeted with the strips of leather as he considered. Maybe... maybe the world was unfair because humans were trying to apply a standard of their own making to something so much bigger, something so much older, so much more complicated then they could ever hope to grasp no matter how hard they tried. Maybe that was why it looked so wrong. They were trying to play Europa Universalis with the rule book from Candy Land. That... that idea, brand new to him, felt oddly right in his bones. Yet it was so new and he was so uncertain of it that he did not dare to say it out loud, not yet, and certainly not to someone who carried the deep scars that Dark had. That felt like it would be stupid even for him.
Finally, he said, "Two things can be true at the same time: free will and a plan. Fate, or whatever. At least, I think it can be, but I'm just figuring this stuff out. I don't have your life experience, so maybe I'm being arrogant thinking I have any idea of anything. Thanks for telling me. It gives me a lot to think about."