It is a great idea to make your child famous because it will allow the child to have an early start on the career and may be quite profitable for the family. Although there are some detriments in having a famous child, I think the benefits of being able to afford the best education outweigh them.
Children should not have to deal with the stresses of an adult job. Being famous can be too much for a child, and it can lead to a lifetime of emotional problems. It's important for children to grow up in a safe, loving environment. They should not have to cope with adult responsibilities as children.