How can abortion be wrong because a fertilized egg or embryo / fetus has no consciousness or feelings?
We believe that human dignity does not depend on the degree of consciousness. For example, would a deeply unconscious person have no human value? Do we have the right to kill a person in a coma even if we knew the person would wake up in nine months? We believe that it would be a gross violation of human dignity even if the victim in question was unaware of what was happening.
In addition, one can measure brain activity already after about 40 days after conception. A fetus’ entire nervous system (including the brain) develops between fetal week 8 and 13.5. After 13.5 weeks, we have reason to believe that the fetus may feel pain and have some kind of consciousness.