Cribs are very safe for infants, and cribs make life less stressful for babies and their parents.
In a crib, a baby can fall asleep, wake up, make noises, play with toys, look around the room, and fall asleep again . . . All without the intervention of a parent. If a crib and its contents are properly set up, an infant cannot climb out of the crib. Therefore, the infant can't get into trouble.