My point isnt about the procedure, but whether using HIV is such a good idea? Although it has been modified to do good, there is a tendency for modified viruses to turn bad. In medicine, the common practice is to give a drug if there is an antidote to counter that drug. There is no vaccine to counteract HIV. And if its genetic material is introduced to where it can pick up other genetic materials to modify itself, it can mutate to a virulent form.