So if the unconceived have rights, we should massively subsidize population growth; and if they don't have rights, we should feel free to destroy Earth.
If fetuses don't have rights, we should commit crimes. 
mnli hypothesis: If fetuses don't have rights, we should commit crimes.  premise: So if the unconceived have rights, we should massively subsidize population growth; and if they don't have rights, we should feel free to destroy Earth.