Aside from all the scientific arguments that are made for or against (since people just pick and choose what works for them from science), for me it a clear cut legal issue. As a woman, another living being does not have rights to the sustenance of my body. My blood relatives to do not have rights to an organ transplant, neither does a fetus have rights to my organ systems. If the government want to extricate the fetus and support it if I choose not to, fine. If the government will support those who have children with better healthcare and access and less discrimination, great. That all sounds way expensive than we can afford, however, and our population is already well and above where it should be for this planet.