Because I'd spent all afternoon at an old friend's house fixing her boiler, which is of a type I'm completely unfamiliar with, and needed to grab something quick for tea. It was fine. I know that chili recipes are a bone of contention: tomatoes or not, minced beef or chopped beef, fresh chillis (and which type) or chilli powder, add chocolate or not, which herbs and/or spices, accompaniments, which rice...