My whole family annoyed me when I lived with them. I hated it when my brothers were in my personal space instead of up in the playroom. I even hated it when they had parties but they got better as they got older, they were quieter and less noisier. They were less messier too.
When I moved out, their space became the basement (which was my own space) instead of the playroom so it was always messy down there.