I personally detest the modern scientific thought-frame that its just "a clump of cells". That terminology seems Orwellian to me, and is a slippery slope to quickly dehumanize the subject.
I'm in favor of a choice to abort in special circumstances such as rape or mental defects, but then again that simply opens the door to more loosely defined slopes. Its like...where do we draw the line? Its either 100% yes or 100% no.
It bites me that a lot of people who support abortions don't really think about these eugenic consequences, whether they are intentional or not. 21 million babies in roughly 50 years, that is a damned tragedy. Couple that with the rapid influx of immigrants who are encouraged by the system to reproduce as much as possible and voila!
Genocide, but we did it to ourselves.
I read things about black markets dealing in fetuses and infant parts, and it sickens me. I don't want to take a hard-line stance against abortion across the board, because I've been there...done that...and I have nobody else to blame except myself for not being in a situation where I was prepared to support something I created. I hate myself for allowing it to happen, but at the same time I know we are in an easier place in life because it happened. I treat sex with respect now, because that is a damned force of nature you're playing with.
Being honest with ourselves as a species, there is no shortage of humans. There are way too many. We are dependent on perpetually increasing exponential growth because we've built our institutions as ponzi schemes. The answer isn't to fill the earth with billions more humans but to achieve a sustainable population level. We will all then have a high quality of life.
It's complicated. I get how some people believe it is a right and there are definitely cases where it is necessary, but most of the people for it are just not up front about the consequences of having an abortion - the mental and emotional trauma, the damage done to the female's reproduction system, what is done with the baby afterwards (butchered and sold for scrap).
I've never really been against it assuming it's done under the 2-3 month mark, but it's really disturbing if you look at it from an eugenics standpoint. What is it, 51% of all black babies in the US are aborted? Over 21 million white babies have been aborted since the 70s? Talk about a severe demographic shift to dwindle the American population and replace it with immigrants, where many of the poorer immigrants have more kids in order to receive more government benefits. That is what disturbs me the most about abortion.