Adding two thoughts that might be semi-fresh:
1) Armchair political strategizing: Do you think that Roe actually being overturned will change the political landscape at all? I really think both Republicans and Democrats wanted Roe to stay exactly where it was, precarious but in standing, to motivate their bases without energizing their opposition. In days past, there used to be a large group of single-issue Republican voters against abortion. In a post-Roe environment, will they still be motivated to show up? Maybe they will in Virginia or Georgia state elections, but will a Texas Catholic still vote reliably Republican? Have the borders of the culture war expanded enough that this single-issue voter no longer exists?
2) It's a Blue-check cliché, but I think there really is a lot of truth in the claim "You're not really pro-life because if you were, you'd support x, y, or z social program for children." Normally that's deployed to quickly just cry hypocrite before moving on, but it really warrants examination. Many vocal pro-lifers are also quite cavalier warhawks and so on, (not to claim pro-choicer are free of contradictions.) I think this contradiction is because pro-life politics often come from somewhere else.
In my personal opinion, there really is something Freudian about the pro-life arguments. The real implied argument feels like "people need to be punished for sex, it cannot be a part of healthy adult's relationships for the sole sake of pleasure." I think a lot of it is a deep, subconscious fear of sexual inadequacy. The unwillingness or inability to confront that causes a lot of the rage and emotion around the topic.
Certainly, there are some supporters who really do have a principled belief in the sanctity of life, but I just don't believe that's the case for the majority.