This is left to the discretion of each parent and couple in deciding what is best for their children. Research has shown that there is some benefit, even if it is not extensive or all-encompassing. Our products are like anything, something to be used in moderation. It is never suggested that a child is in continuous play or use of a product. Walkers are used as an aid, a tool, just as training wheels on a bike--at one point, the wheels must come off!