We have a boy soon to be 5 and girl nearly 7 who currently have their own room, but we'd like to use the boy's room as a study. They often say they want to share and we sometimes let them, which sometimes works, and other times sees them keeping eachother awake. Am wondering whether it would be good for them to learn about sharing space and build closer ties, or if it's better for them to keep own individual space. Any thoughts?