If someone believes abortion is ‘wrong’ he’s at complete liberty to express that opinion, no one is seeking to prevent anyone from expressing his opinion concerning abortion.
Private persons in the context of private society are free to debate the issue of abortion absent interference from the government.
From a Constitutional standpoint, the issue concerns solely the relationship between government and those governed, where the right to privacy prohibits government from acting to compel a woman to give birth against her will through force of law.
Lawmakers hostile to privacy rights are likewise at liberty to express their opposition to abortion, but they may not seek to enact measures which result in an undue burden to the right to privacy; and if they do, they should expect those measures to be invalidated by the courts pursuant to privacy rights jurisprudence.
The right to privacy safeguards not only the right of a woman to decide whether to have a child or not, it protects the right of Americans to decide the issue for themselves in accordance with their own good faith and good conscience, where it is not within the purview of government to make such determinations concerning matters both personal and private.