The key problem with the abortion debates today seems to be that we are arguing from different worldviews.
From a purely evolutionary standpoint, "Since man is just a more highly evolved life form, human life is nothing special. A person does not have any more inherent value than the life of his alleged ape-like ancestor. Therefore, abortion is just a fact of life regardless of the consequences for the developing life inside... If humans evolved from [other] animals, their existence is derived from the survival of the fittest. From an evolutionary perspective, abortion seems to be a brilliant method to aid natural selection. Why not end the lives of those with genetic defects or disabilities before they can be a drain on society? Might abortion even be saving these weak ones from lives of suffering?" (Abortion & The Origins Debate)
In contrast, biblical creationists believe mankind is distinct from the animal kingdom. Our belief is based on the Creator’s testimony in the Bible. After creating the universe and filling the earth with plant and animal life, God created human life on Day Six of the Creation Week. God personally formed man after His image (Genesis 1:27). He gave people unique linguistic, aesthetic, rational, moral, and spiritual faculties not given to animals.
Download this excellent free video Fearfully & Wonderfully Made by Dr. David Menton to find out more.