Read an embryology text book because clearly you don't understand the definition of life.The premise that life begins at conception doesn't hold. The egg is alive, the sperm is alive, the zygote is alive. Maintaining this is a human is an opinion in a range of opinions. Pretending that we do not, individually and collectively, make decisions about life is patently absurd and obviously wrong. At the point of a fertilized egg, the prodigious nature of life dictates that many will not mature. That human intelligence would intervene to spare suffering and disability is not unnatural.
“In that fraction of a second when the chromosomes form pairs, the sex of the new child will be determined, hereditary characteristics received from each parent will be set, and a new life will have begun.” Kaluger, G., and Kaluger, M., Human Development: The Span of Life, page 28-29, The C.V. Mosby Co., St. Louis, 1974.
“It is the penetration of the ovum by a sperm and the resulting mingling of nuclear material each brings to the union that constitutes the initiation of the life of a new individual.” Clark Edward and Corliss Patten’s Human Embryology, McGraw – Hill Inc., 30
“Although it is customary to divide human development into prenatal and postnatal periods, it is important to realize that birth is merely a dramatic event during development resulting in a change in environment.” The Developing Human: Clinically Oriented Embryology fifth edition, Moore and Persaud, 1993, Saunders Company, page 1