As one can tell, this simply is not possible in the legal and moral world. Anyone's opinion counts, and no opinion should be excluded based on the fact that they cannot be in the situation being discussed. In truth that is impossible. Each pregnancy is an individual situation, but yes, there is a certain better perspective if one has been in the situation before that is being discussed. But in order to reveal all sides and new arguments and new perspectives, all opinions must be included.
All people have their rights to an opinion and their rights to express that opinion.