> Because "anti-abortion/pro-life" removes a right from women. Trading the rights of a developed adult for the rights of a hypothetical future person.

Their perspective is that abortion is killing a human being. Given that, it’s entirely consistent.

> What does ancapistanism have to do with it?

Nothing, other than that I was providing some context on where I’m coming from.

> Is there a non-religious reason to be against the right to choose abortion up to 24 weeks of pregnancy?

While religion is certainly a factor for a lot of these people, this question doesn’t make sense to me. Is there a non-religious reason to be against killing any person, regardless of age?

The base difference in perspective is that the other side here believes that the fetus is a human being, with all the rights that come with it.