I am quite sure that you understand, or if you actually thought beyond the shallows that you would understand, what you described is a silly and non equal equation.
One cannot drink a glass of oxygen and later a glass of hydrogen and that be considered water. They have to be together and in the right combination. A human developing fetus, a child at that stage, has to have sperm and egg come together for there to become a dividing and developing life with the potential to become what you are right now.
Potential does have legal ramifications. Wrongful death lawsuits take into consideration the future potential. "
1) loss of income, and 2) loss of parental guidance. The jury may consider the decedent's earnings at the time of death, the last known earnings if unemployed, and potential future earnings." So potential can, and does, come into play.
Wrongful Death Overview - FindLaw