A new argument for antinatalism In the meantime I can hopefully help a little by pointing out several issues raised about the OP.
1) “This is, I believe, a new argument for antinatalism.
To procreate is to create an innocent person. They haven't done anything yet. So they're innocent.”
- Having done nothing neither makes someone ‘innocent’ nor ‘guilty’. It is irrelevant.
2) “An innocent person deserves to come to no harm. Thus any harm - any harm whatever - that this person comes to, is undeserved.”
- You have failed to explain this. If your position is that an innocent person deserves no harm but that is what innocent means then you have no argument. You are just stating something and expecting people to follow.
Either way, it is faulty to paint things so black and white. In a scenario where two ‘innocent’ people’s interests conflict harm is inevitable so your definition does not hold up at all. Such inevitable harm comes about through ignorance/misunderstanding. You can still argue on some level that ‘neither deserve harm’ even though two innocent people have just caused harm to each other, but only if you accept that the judgement of what someone ‘deserves’ is a judgement made with an effort to ignore any blame due to ignorance.
3) “Furthermore, an innocent person positively deserves a happy life.”
- Unsubstantiated claim.
4) “So, an innocent person deserves a happy, harm free life.”
- To repeat. Unsubstantiated claim.
5) “This world clearly does not offer such a life to anyone. We all know this.”
- We know this because life without any degree of ‘harm’ whatsoever is not ‘life’. Life requires learning and learning is always, at some stage, a hardship.
6) “It is wrong, then, to create an innocent person when one knows full well that one cannot give this person what they deserve: a happy, harm free life. To procreate is to create a huge injustice. It is to create a debt that you know you can't pay.”
- None of this follow as you are riding on too many unsubstantiated claims and poorly sketched out terms.
7) “Even if you can guarantee any innocent you create an overall happy life - and note that you can't guarantee this - it would still be wrong to create such a person, for the person deserves much more than that. They don't just deserve an overall happy life. They deserve an entirely harm-free happy life.”
- I might want to be able to fly like a bird or win the lottery. A ‘harm free’ life would not be a ‘life’ at all. This seems to be a rather naive view. It is a bit like expecting a child raised where their every action is praised blindly and expecting a well rounded individual to emerge from such a methodology of raising children. Many parents have attempted to ‘protect’ their children too much and with pretty horrific outcomes. The very same idea of ‘no harm whatsoever’ (regardless of deserving said harms) inflicted upon someone would result in early death due to said person being incapable of looking after themselves. I do not view a ‘happy life’ as a life under the perpetual guardianship of a tyrant whose sole purpose is to shield said ‘innocent’ from every single possible harm.
There is also the embedded problem of putting an ‘innocent’ on a pedestal. An ‘innocent’ person is also a person with no experience, knowledge, reason nor any real understanding of morality. Be careful if your purpose is to prolong such a state of ‘innocence’.
Anyway, I will provide a proper argument for antinatalism and I suggest you provide a proper one against it.