The initial spark of creation is easy, the creation of said spark is harder, playtesting is even more difficult, and then iteration is where the time meter spikes and a designer could spend a lifetime trapped in this loop of spending years to make only the tiniest incremental improvements to the game in question. That’s why the reward for “completion” is never worth the effort. because paradoxically, the game is never “complete” in the designer’s eyes.
— T.C. Petty III