> But I see it as a kind of craftsmanship and sharpening my own tools. I don't know another, better way to do that.

Toooootalllly. This project started out for me as a learning exercise, and for a long time an explicit non-goal of the project was to ship a game. It's just my own little land that I know every nook and cranny of for experimenting and, sharpening my tools, as it were. It's also the best way I've ever found.