I had to share my room with my sister after she was born. I was 8 at the time. I was told if she’d been a boy I’d still have had to share my room as my two brothers had the other room, but that would’ve been temporary as he grew. I still wonder how long I’d have had to share my room with my little brother. As it was I had to share with my sister til my brothers left home and she got their room.