What motivates women who crusade against abortion?

What motivates women who crusade against abortion? I’ve always wondered this.

I think the American philosopher Ayn Rand identifies their motivation. It is not love, but hatred. Writes Rand:

“I cannot project the degree of hatred required to make those women run around in crusades against abortion. Hatred is what they certainly project, not love for the embryos, which is a piece of nonsense no one could experience, but hatred, a virulent hatred for an unnamed object…Their hatred is directed against human beings as such, against the mind, against reason, against ambition, against success, against love, against any value that brings happiness to human life. In compliance with the dishonesty that dominates today’s intellectual field, they call themselves ‘pro-life.’ “