This is especially useful if you are returning to work after a break or Recruiters can contact you about relevant jobs as and when they become vacant. This frees you up to have a life outside your work and career. (Find out more from this source).
Starting a successful graphic design business goes beyond having the knowledge of being a good designer yourself; there are a lot more factors that surround the chances of getting started in this venture. First and foremost, you need to develop confidence in yourself, come up with a portfolio, setting up your price; there is a lot you will need to do to get started.