Most people I know who used birth control pills did not realize they could be killing their own child. If more people knew the truth about birth control pills the might choose other forms of birth control. They should have a warning in big print that birth control pills also worth after conception and may lead to an unwanted abortion.
There are so many choices in birth control these days that do not act after conception, there is no excuse for using the "pill" if you already know it act after conception.
"They should have a warning in big print that birth control pills also worth (sic) after conception"
There is a lot of information available on how the pill works (including in the package insert), and different kinds work different ways. I think a woman who does NOT want to be pregnant is not generally going to be all that fussy about how that gets accomplished (sorry to be blunt, but there it is).