A friend of mine has two children, a girl age 8 and a boy age 11 who are still sharing the same room. When I mentioned that I thought that was inappropriate at their age for many reasons, they felt it was acceptable, thinking it fostered a closer brother/sister relationship.. Am I being a prude? Shouldn't there be some more modesty and privacy between boys and girls. The house is sufficiently big with enough rooms for them to have their own.