Regardless of our age or life experience, we all want our privacy. For some people, this wasn't an opinion growing up. With many siblings and not enough rooms in the home, it could happen that people had to share bedrooms. I've had to, but only for a year in college. It's definitely uncomfortable, and can cause emotional disturbances that you weren't prepared to deal with. Everyone needs their privacy.
This brings us to the Reddit thread. The original poster (OP) is a teenager whose parents are divorced and remarried. Her mother married a man who has a 4-year-old daughter, and even though their current home has enough rooms for the two girls, the mother insists they share a bedroom. Now, as if being 15-years-old isn't bad enough, living with a 4-year-old is the cherry on top of a horrible situation. You'll have to read the full story below for all the juicy details.