I do develop a game :) . I started developing a game for the first time back when I was in high school, using RPG Maker 2000, with my own assets (graphics, sounds, MIDI tunes, even fonts I drew myself) but I never finished it because it was too big of a project, I couldn't keep myself from remaking the first quarter of the game over and over, and the tool was ultimately ill-suited.
And now, I've been working on a platform/adventure game for two years using GameMaker Studio, again with my own graphics and (hopefully, because I haven't started that yet) my own music and sounds. Right now, I'm getting all the content done before polishing it and working on everything music and sound-related. I've learned from my mistakes with the first project ^^.