You got me, since during the time I did believe that I was a lot less happy than I am now, because that falsehood was part of a whole set of falsehoods which led to annoying obligations. But I do distinctly remember being satisfied with knowing the ultimate goal of the universe and my place in it, and how realising the truth made me feel unsatisfied.

The statement "the truth is never an unsatisfying thing" seems to be affect-heuristic reasoning: going from "truth is useful" to "truth is good" to "truth always feels good to know".