Designer Baby: Right or Wrong?

With the new age of science and technology comes issues with controversy and opinions about all the new advances happening. One of the big issues is test tube babies or the nickname, designer babies. Scientists can now match up a parents sperm and egg cell to see what the DNA would be. Now why is would we even need this? Well in many cases an older sibling has a disease where they need an exact donor, which can be filled by these test tube babies to exactly match their older sibling to save their life. Now the argument is whether or not this scientific method of choosing you baby's DNA is ethical, moral, even natural. In my opinion I think that in the cases where this child can save their siblings life then it is completely ethical. Neither of the children are being hurt and they are actually saving a life. In the face of whether or not the child was born from love I think it all starts and comes from love and in turn when the child is saving it's older sibling the parent will love them even more. I know for certain I would do anything to save my sister if she needed it no matter what so even though some say these kid's don't have a choice when saving their sibling they would probably volunteer if given the chance.