Because I didn’t really care about the film. It’s a side story movie that I didn’t think needed to exist, but I was curious how it dealt with some of the backstory. And then I heard some talking about a deleted scene of Han being a TIE pilot and watched it since it was posted online before the movie was released on digital/BR.
It was better than I expected given what I’d heard about it (all of which was accurate), though, so there’s that.