What is the "bad hobby" in sharing information?

Although I have never shared a room with others, I usually read some sharing information. It feels like watching those jokes. Everyone has his own requirements and wants to find someone who can get along in some ways. Don't cause any inevitable problems. I think this request is reasonable. If you wanted to share the rent together when your mind was hot, you might not know how long you would stay, so it is inevitable to discuss these issues clearly before sharing the rent. Some people will have a request to the people who share the rent, that is, they can't have "bad hobbies". I think "bad habits" may have the following points:

Like drinking and smoking. I think everyone drinks and smokes for different reasons, but for sharing a room, the other person may be a neat person, and you pollute the air, get drunk every day, and smoke makes the room smoky. For others, this may be seen as torture. If I don't want to share a room, I will not only hurt myself, but also hurt my health.

I like clubbing and stay out late at night. I am a person who is very principled about time. Generally, if you go out to play, you will never go home after 10, even if you live on campus. If my roommate likes clubbing and doesn't come back at night, I still don't want to live with me. I think he will disturb my work and rest, and if I don't sleep well, I will be in a bad mood the next day, and that person may suffer, so I don't want such a person before it's too late.

For me, bad habits have the above two points!