It would have to be the cleanup afterwards. I don't mind the chopping, peeling, grating and creating (and eating LOL) the dish, but by the time it's time to clean the kitchen, I'm ready to do something else, like sit on the couch and watch TV.
So to make it easier on myself, since I live alone, I do wipe down the countertops and then fill up the kitchen sink with warm soapy water and let the dirty dishes soak themselves overnight. The next morning they are easier to clean. That way it's not so overwhelming to have to do it all at once.