But where we differ is in regards to severe birth defects. I would say that unless the mother's actual life is in real danger...that's it. The reason being is that actual bright line you referenced. You referenced hydro/microcephaly....someone else could see Down's as a "severe" birth defect. China and India practically see being female as a birth defect.

So besides the birth defect aspect that could be worked, there is the philosophical aspect of killing another person who has deformities. We have diseases now that are eventually terminal. When someone is diagnosed with them, we don't have them killed. A woman doesn't have her ALS suffering husband killed. If grandma's Alzheimer's gets bad...we don't put her to "sleep". We still call those acts murder. Why make the distinction for someone yet to be born?

[Correction: I originally misread your post as that you were against all abortion due to the "bright line" reference. That is my mistake. I understand your viewpoint, but mine differs in that I believe that all elective abortion, regardless of time frame, are wrong.]

~Jeordam