Mine just got out of a game; many of his friends left it, and there wasn't much incentive to stay. As for why I was picked, in my case it was to see if I could truly return to the Light Side.

Or so my writer claims. In practice he seems to think reliving my past trauma is more interesting when I can think of thousands of better ways to spend my time. [He's as unenthusiastic about the whole venture as you are, Leia. Ben has the First Order to stop and Rey to kind-of-sort-of mentor, he doesn't have time for this.]