Um, the fetus is 2.5 - 3 millimeters. That’s smaller than a grain of rice. Do you think that fetus is truly aware?
ZooMom, the complex cerebral cortex does not begin to develop until the fifth month, and is not complete until around the sixth month or so. The cerebral cortex is the brain that can “think”, not just monitor functions, react to stimuli, etc. Until approximately the 26th week at the earliest, the fetus cannot even feel pain…the nerves exist, and the receptors in the brain exists, but they’re not “hooked up”. When the complex cerebral cortex in an adult is irrevocably dead, we consider the person dead, although the lower brain may still regulate heartbeat and breathing.
http://anatomy.med.unsw.edu.au/cbl/embryo/history/page5c.htm
"Indeed, the current conception regards the entire cerebral cortex as chiefly composed of centres of ultimate co-ordination of impressions, which in their cruder form are received by more primitive nervous tissues–the basal ganglia, the cerebellum and medulla, and the spinal cord.
This, of course, is equivalent to postulating the cerebral cortex as the exclusive seat of higher intellection."
http://www.2think.org/science_abortion.shtml
"But large-scale linking up of neurons doesn’t begin until the 24th to 27th week of pregnancy–the sixth month.
By placing harmless electrodes on a subject’s head, scientists can measure the electrical activity produced by the network of neurons inside the skull. Different kinds of mental activity show different kinds of brain waves. But brain waves with regular patterns typical of adult human brains do not appear in the fetus until about the 30th week of pregnancy–near the beginning of the third trimester. Fetuses younger than this–however alive and active they may be–lack the necessary brain architecture. They cannot yet think."
I believe you can have at-will abortions in the first trimester, and restricted abortions in the second. IIRC, the majority of elective abortions occur before the fourth month. Is there a period of time during which you think it is acceptable, or less heinous, to abort?