Being prolife is not merely an anti-abortion worldview. At least it should not be. Being prolife is a gospel issue, which informs our worldview on a wide range of sanctity of life issues: orphan care, caring for the marginalised, issues of human trafficking, racism, etc. If we are pro-gospel then we will necessarily be prolife.
The gospel is a sanctity of life message. After all, God sent His Son into the world to save sinners; human beings made in the image of God. That fact alone has much to say about the issue of the sanctity of life. Mark 5 has much to say to us in this regard.