There's many reasons why it's good to have a designer baby. You can design your baby to have a different eye color than the mom or dad even the same hair color too. The baby can me born to have no disabilities or any diseases. For instance, if there's a woman who can't have any children she can create her own baby but she will have to find a carrier and her and her spouse may have to pay a lot of money for those couple of things to be done.
For the women to create a baby if she can't have any children she will need to find a carrier who would feel comfortable carrying the baby for 9 months and going for the check ups. For all that to happen