We have a four-bedroom house, and our two boys share a room. They are almost 4 and 2 years old. They have had to work out some sleeping issues, but they really like sharing a room. It's sometimes a bit too much fun for them, if you know what I mean...
We also have a one-month-old little girl, and she is in a room with me and daddy right now. As soon as she is sleeping through the night, she will be in with her big brothers, too. As they get older and want their own rooms, then we'll change the arrangements. Right now, they all want to spend as much time together as possible. How can I say no to that?