A walker is not essential for babies and is generally not recommended by pediatricians for developmental reasons. While walkers can provide entertainment and mobility for babies, they can pose safety risks, such as the potential for falls or accidents. Additionally, walkers can delay motor skills development by encouraging babies to move in ways that do not promote natural muscle and coordination development. Babies who use walkers may also be at risk of developing poor posture or delayed walking. Instead, providing a safe, supervised environment for babies to practice crawling and walking at their own pace is encouraged for healthy physical development.