Is Abortion restrictions motivated by slower population growth?

[Former President tack50]

Unless your name is Nicolae Ceausescu no, it absolutely isn't. (Indeed if you really want population growth at all costs you'd ban abortion as well as contraceptives, just as Ceaucescu did)

Opposition to abortion really comes from moral positions in most cases. These are usually religiously motivated, but not always (plenty of pro-life non-religious people exist; as well as a smaller portion of pro-choice religious people)