Interestingly, Hippocrates who was the Father of medicine did believe in the sanctity of life. He was not a Christian but he instinctively knew that abortion was wrong.
Lots of non-Christians, both religious and non-religious, believe in the sanctity of life. If a person thinks of themselves as religious you would think it would be a no brainer.
Of course. Modern day atheists can be very annoying, but they are not running around murdering people.