The Red Cross gets blood donations that save lives. You're being naive about the power these Religious corporations have. They apply political pressure. I'll let it go at this. No Christian is forced to have an abortion. You don't have to have one, but you don't get to decide for someone else. Oh wait, yes you do. What should be a private medical decision is now illegal in many states directly due to Christian pressure. Spiritual beliefs should be a private matter for each individual to contemplate. One size does not fit all as EMF would have you believe...
While this does not necessarily conform with my view on the legality, morality or timing considerations about abortion, I will state how I see the argument... and how devoid of logic your assertion is.
Society agrees that taking other people's stuff is a crime, and punishes it. Society agrees that killing other people is improper and castigates anyone who does it. Society has rules about how people who live together as a community and nation have to behave to coexist and, hopefully, prosper.
People have differing feelings about when life begins and that affects their views on abortion. Because society in general believes that taking another person's life is generally wrong, we have an argument about when life begins. And thus, abortion boils down to "when is a fetus a person". There is disagreement here, and much of it is based on the moral decision about what "a life" is.
So, for those who believe in life beginning shortly after conception, abortion is murder. We don't condone murder among adults except in self defense or war. So how do we, as a society, establish rules for the murder... or not... of a fetus. We, as individuals, don't get to decide what is and what is not murder. Our leaders, lawmakers and our beliefs establish uniform rules.
This is a societal decision based on the taking of a life. The question is "when does life begin". This is not a "private" decision as humanity, by definition, is not private as humanity is societal.