Eh, not really. In a vacuum, sure, but if a 10-year-old becomes pregnant, then that life is surely suffering, and probably also in danger from the pregnancy. If the pregnancy were to go awry, that could end both lives. If the pregnancy went off without a hitch, then another life has been introduced into a place of suffering.
But the wellbeing of this particular 10-year-old or their child isn’t the point here. If someone believes that life begins at conception and that all life is sacred, then being anti-abortion is a perfectly logical stance. Otherwise, they’d effectively be okay with the act of murdering unwanted children.
A person with this belief might still acknowledge that there are situations where abortion could be justified. However, they may fear that allowing it, even in narrow cases, creates a slippery slope that could lead to thousands of unnecessary abortions.
Religious people literally worship suffering, you won’t convince them with this argument.
Religious people literally worship suffering,
Specifically, Christians. There are plenty of religions that have no problem with abortion (and are against suffering).
