As a parent also, sleeping separately in our son and crib is an important developmental milestones. During the 1 year visit, most of my parents who has children co-sleeping are having almost impossible time getting a child to sleep now in a crib or own room; it's a lot of stress and loss of sleep for the parents when it could have been taken cared of months ago. Even parents want times for themselves at bedtime instead of having a child in bed with them at nights.