Personally, the reason I didn't make levels for FiNCK is because the game placed more emphasis on puzzles/challenges than it did on scenic environments and exploration. Even though the Saira level editor is far harder than FiNCK's, I persevered long enough to construct a Saira level because I like making beautiful places to explore.
I look forward to KnyttWADF because it shows Saira's beauty and Knytt Stories' easy level creation.