the unwanted baby argument goes back to the argument that abortion and even forced sterilization were good ways to control the population of the poor, defective, and minorities. it goes back to the 20's when some very well known people, like George Bernard Shaw and Margaret Sanger were advocating for various forms of forced population control/manipulation.
it was their writings and speeches that Hitler read and referenced as he stated his own population cleaning programs. this was also the foundation of Planned Parenthood. http://www.blackgenocide.org/sanger.html
you can look up plenty more, but i know you don't like links.
would there be unwanted babies if abortion were ended. yes. might there be fewer if women were not paid for having babies? yes. might there be fewer if it were still socially unacceptable to have babies out of wedlock? yes...although i know we are not going to reinstate any kind of moral judgment...god forbid....
is the unwanted baby argument still an excuse for murder? i think so.
now, let me tell you another story.
my brother has 4 children. all of them are talented and in the IQ gifted range.
when his wife was pregnant the 1st time they did an ultrasound. it showed an anomaly on the brain of the baby. my brother and SIL were sent for genetic counseling and the geneticist recommended that they abort the baby. they declined. the baby was born healthy.
same thing happened with the second baby and they were referred to the same geneticist. same advice given. 2nd baby born healthy.
3rd baby, you guessed it....except this time the geneticist refused to meet with them because she "didn't want to waste her time with religious nuts".
4th baby: this one came a little later and was a bit of a surprise. when the ultrasound was done, same anomaly. my brother told the tech not to bother with the referral to the geneticist. guess what she told him? "oh, we see this all the time and we have found that it really doesn't mean anything".
we think it's ok to play god. we decide who lives and who dies. by what right does a woman end the life of her child? because it's her body? once she's pregnant, it's not her body anymore. she shares it with another life.
in this day, when birth control is everywhere, there is no excuse for most accidents. perhaps when they happen, if we didn't consider them accidents and inconveniences, we think differently about ending that life.