For me, the main enjoyment is the aspects of the game in general. I think exploring the world of SBURB is quite fun in the earlier acts, less so in the later acts. It's quite an ever-evolving sense of scale of it all. For about Act 6 (Especially later on in the act when it Gets Good), I do enjoy all of the weird meta-fuckery going on, like with the Stardust Glitches.

But that's mainly in the main comic, I have barely touched the epilogues or Beyond Canon.