My son first slept in his own room when he was five. In the intervening years, my wife and I did a lot of talking, plenty of arguing and a fair amount of researching. To my wife, born to a fairly normal Japanese family, the idea of him sleeping away from her side was nothing short of unthinkable.
If we look at what we as parents are actually trying to achieve - healthy, happy adults - we need to ask ourselves, does this have to mean sharing our beds with our children or letting them self-wean? I think not. Because what really matters, what is really absolutely crucial to healthy child development, is not 'Attachment Parenting', but 'Responsive Parenting.'