I'm normally not big on puzzle games either, but, well, then I heard who did the end credit song and decided I had to make it to the end to hear it....

For uber-spoilage, when you finally come face-to-face with the malevolent and murderous AI in charge of the tests, she does taunt you with parties, recipes, and speaks muchly of cake and the Weighted Companion Cube you were forced to euthanize. Seriously, it's a very funny game, and I'm not doing it justice....

Here's a YouTube video of the end credits.