The real issue here is: where do we draw the line between bundle of cells and human person with rights? Right now, we draw the line at birth, and late-term abortions are almost universally considered kind of icky. Abortion of a bundle of cells is not infanticide. As Obi-Wan Kenobi so badly worded, "only a Sith deals in absolutes." If you take the standpoint that abortion of the bundle of cells, before development of the brain, before development of the heart is wrong because of that bundle's potential, then every human being on the face of the earth should be having as much sex as possible because every single spermatozoon and ovum that dies is wasted potential.