Well, he doesn't really know what he's getting into, but at least Zack realises he's getting into something. Which is more warning than he ever got when Abe created him... a dim memory now, but Zack is certain of that fact.

And now too, he has the choice, where he didn't before.

"Free will, right? Comes with its own set of problems."

He'll start munching on his burger again, pondering the future.