Being able to repeat words is not the same as understanding them, especially when it comes to arguments around morality. There’s also a difference between saying “I see your perspective, I just disagree because my moral frame is totally different” and “I understand what you’ve said but it’s invalid and illogical.” You simply do not have a desire to understand different perspectives from your own. In that sense you are very normal
This argument has nothing to do with morality when you break it down to "is this a human life or not" The moral implications come with everything surrounding the actual ending of the life. Everyone agrees on the moral implications of taking a human life. To frame my viewpoint as "having a different moral frame" is just asinine. You don't have some sort of moral high ground on this issue. There are few moral positives to forcing children to be born into lives that will, in all likelihood, be lives full of struggle just on the off chance that some of them could have the potential to work themselves out of said struggles. Moreover, to say that they have to be born into such situations and then support a system of society that would do next to nothing to assist them or their family in actually having a better life is purely evil. (Not saying that all pro-life people are of that persuasion but a majority are)
I imagine a young woman of 18 who gets pregnant during her first semester of college. She's not ready. The guy's not ready. Having a child at that point would likely mean one or both of them will drop out if they stay together at all. She's pretty much putting herself through school, so she can't count on help from her family. If she drops out to have a child now there's no guarantee she'll ever get back. That's a tough situation for everyone. Now, on the one hand she can choose to make a tough decision and end the life and the potential of the lifeform that is currently developing. But, she is doing it so that multiple lives in the future might thrive. She makes the hard decision. She goes through with the procedure and cries every night for a month. But ultimately the pain subsides. She graduates. She doesn't end up with the previous boy. He never knew. She does end up a man that she meets shortly after college and they go on to have 3 wonderful children who are well taken care of by both parents and are in a stable situation.
On the other hand, I can tell you of a sadder situation. A girl graduates high school. She's intelligent and promising, but she doesn't have the money to go straight to university so she starts out at junior college, she is upset with her financial situation (no cause of her own) and that makes her rebellious. She makes a bad decision. She gets pregnant with a local guy she knew from HS. She does not have access to a clinic so she goes through with the pregnancy. The guy turns out to be a sleaze. If she had known she might have given the child up for adoption, but alas she could not. He's drunk for most of the child's youth. He can't hold a job. She ends up fighting for child support for 10 years, never getting any support, and at the same time she's slowly working her way through school class by class as her and her child live in skeezy apartments on food stamps. By the time her child has reached 4-5 they find out that she has developmental issues. The little girl will never be able to hold a job that will sustain her. Despite all the setbacks, the mother graduates with a bachelors and a masters but, by now the kid is 14. At 16 the daughter gets pregnant for the first time, as the mother didn't have the time to devote to holding a job, going to school, and providing excellent parenting for a mentally impaired child. The new grandma now starts working a menial job to support 3 mouths, never being able to take full advantage of her degrees considering her age and the new emergency. The impaired girl has 3 more children with 3 different fathers, all slung on grandma who ruined her life one night 30 years ago. The family is located in a slum of a local city. The grandchildren all sleep in the same small living room on cots. There is little hope in site for any of them to break from this cycle. God help them when Grandma passes. Hopefully you're okay with them all living on that government dime.
Imagine if the grandmother had been able to finish her education 10-14 years earlier, how the family tree might have been different.
Would I feel bad for the daughter and the grandchildren not being there? Sure, but in my mind their spiritual equivalents might have come at some later date, and not to the detriment of an actual original human life. I choose the better timeline instead of the worse one. It's a Wonderful Life be damned. I believe in maximizing overall prosperity while minimizing suffering and the best way to do that isn't throwing children into "families" that are unprepared to raise them with some legitimate chance for prosperity. To do so is immoral, and I will never take anyone seriously who believes alternatively. I guess those situations are just a bit too "normal" for your shining morals on a hill though.