What's one habit that would drive you crazy in a roommate? There is one habit that would absolutely drive me crazy, and that is being careless when cooking before going out. One day, I came home after my night shift at around 9 a.m., and I smelled something strange before I even opened the door. When I went inside, I found that my roommate had left the stove on, and the spoon in the pot had actually melted. I couldn't imagine what would have happened if I had arrived home an hour later; there could have been a fire. I talked to her about it, but she just said she could buy me a new spoon and pot. To be honest, I couldn't put up with such irresponsible behavior, so I decided to move out two months later.