Very simple. There is no societal agreement and hence no logical conclusion on this issue. So argument is for Pro-life vs Anti-life or Pro-freedon vs Anti-freed

Very simple. There is no societal agreement and hence no logical conclusion on this issue. So argument is for Pro-life vs Anti-life or Pro-freedon vs Anti-freedom. But Anti-life people call themselves pro-choice and Anti-freedom people call themselves pro-life.