Here is a list of some things that past and current roommates have done, that are very annoying to me.
1. Taking up a lot of counter room with multiple kitchen appliances.
2. Using the kitchen/stove very frequently every day, all day, so that this makes it hard for anyone else to cook because they are always in the kitchen.
3. Burning meals constantly and stinking up the whole house.
4. Blasting country music in the kitchen, when people are trying to watch tv in the open living room.
5. Bringing a closet up for the kitchen that has Bible verses written all over it... inconsiderate to anyone else's religion.
6. Leaving things in the sink for long periods of time.
7. Stuffing the trash can and not taking the trash out.
8. Having friends over without telling the roommates.
9. Having sex very loudly (...vocally).
I can't wait to live alone.