Careful there- you seem to be deliberately missing the point of the argument, i.e. that if human life starts at conception then there is a clear moral imperative to protect that life. I happen to disagree with both the assumption behind that logic and with the conclusion that abortion must be outlawed (for one thing, it's far from clear that outlawing abortion is effective at preventing it) but the logic is there, and does not require religion to see.
My own opinion is that abortion is a hard decision and should only be a worst-case scenario, but it should be a personal one. I also believe that access to contraceptives (including plan b) for women and human embryos for research should be unlimited. More to the point,
even if one were to accept the most extreme stance on abortion: it amounts to the mass murder of thousands of children a year, I wouldn't really care. Even if murder and abortion are moral equivalents, they do not have an equal impact on society. Murder undermines the social contract and, if left unpunished, could lead to chaos, fear, and a collapse of order. Abortion does none of those things. As I believe that the state's role should tend to minimize the importance of morality and emphasize the creation of an atmosphere where civil society can thrive, I believe that the difficult moral questions surrounding abortion should be let to the individual. I empathize, however, with those who disagree. My advice to them would be to work to make the world a place where abortions aren't needed. Increase economic opportunities for the lower classes, encourage effective sex education and easy access to birth control, volunteer at an orphanage, adopt a child, provide a support network for single mothers, etc etc... the list of more effective ways to fight abortion than making it illegal can
go on and on.
As for the economy, I'm not going to touch that one with a ten foot poll. However, most was the correct word. More economists are Keynesian, or at least influenced by Keynes, then fall under the UC or Austrian school. Doesn't mean one is right, just that there are more of them.