Want is a Wasting Disease

"I want to stay out of Hell. I will do anything."

To stay out of Hell, you have to stay away from hunters, monsters, demons, and angels. Essentially, you can only associate with normal humans, and Xal had gotten very, very good at that over the last six thousand years. Yet somehow, despite his lack of participation in the supernatural world, the Winchesters found him. They found him, and now he has to keep them both alive, or he gets a one-way ticket Downstairs, and that's about as far from an easy job as you can get.

He's done everything they asked. He trusted them-like an idiot-but even when he came to after the fact, he didn't dare go against them. He put his head down and forced one foot in front of the other. Obedience to the best of his ability, right up to the line in the sand where compliance becomes dangerous. He has to walk that line-sometimes, he has to dance on it-but it's not like he has a choice. He belongs to Sam and Dean Winchester. What else can he do?