Not when it's something you want to do. I've had dumb ideas and then spent weeks working on them just for fun. It doesn't feel like work and the time flies.
Because its really hard to impress people these days with original work unless its truly an interesting piece like "What's in the Box?" (because of the fact it's a 1st Person POV shot narrative, which is rarely done these days) or the one from Europe not too long ago with the robots made at a low budget (I can't remember the name).