Because it’s not yet a child. It has the potential to become one, but it isn’t yet. Seriously, you can’t be daft enough not to understand the difference.
That’s exactly the answer given to you above - the line is murky and grey, there is no clear point that everyone agrees is the right point.
In such a circumstance, the right answer is open to interpretation, and the right solution for a society is to accept that the best person to make that decision is the person involved.
If you want my answer, it’s when brain cells develop enough to start looking like a functioning brain (somewhere around 16-20 weeks). Before that it’s just a brain dead mass of cells regardless of how it looks.
Clearly you have a different moment, and that’s fine, but you don’t get to ignore that the issue is open to interpretation. Otoh, I admit that both sides are guilty of trying to railroad a “simple” interpretation as the only right answer, it’s always tempting to force a simple answer and declare the problem solved, it’s harder to let people decide for themselves what the right answer is, but that’s the right thing to do when we as a society cannot reach a consensus, and we certainly don’t seem to have a consensus on this one.
I think the best thing to do is actually making the climate desirable to have children. A lot of abortions happen because “I can’t afford it” “I can’t do it because of education”, better access to contraception, etc. I think childcare should be free if you’re not like- middle-middle class and pregnant women should get child benefit. However, crisis pregnancy centres are also weirdly called out which is strange considering they are wanting to help care for the child.
This still doesn’t change the fact that I cannot see how abortion is moral at all. And it’s the same reason why I don’t think we should let people harm their children. The “my body my choice” thing won’t work with me because I do not consider a foetus part of the woman’s body. I saw an ultrasound of an abortion as well and it was shocking, the foetus actively seemed to be trying to escape it. If you asked a child “do you want to die” the answer would obviously be “no”. I absolutely abhor how people dehumanise foetus as “mass of cells” or even worse “parasite” and make abortion seem like a normal thing. I abhor people who use abortion as a contraceptive method. I abhor people who are calling for “death penalties” for people who get abortions, as most of the time, they aren’t in a good state when they get it.