I'd also argue that a person who never creates a child has no place in this discussion? Why even bring that up? And there is quite a large difference between a fetus and an 8yo.
I don't agree with you, I believe we have a moral obligation to guide children until they have the capability of fully understanding life and the world. Even in the wild, a mother (animal) will guide her young, prevent them from doing things that put them in harms way and protect them.
An embryo and a kid are really different indeed. But both will potentially be happy adults. But an adult who doesn't exist yet has no right to exist yet.
I agree with your last paragraph, even if you say that you don't agree with me. I think we have a moral obligation to guide children and give them happy lives. The problem is that we are already not doing that. If I could save every children, then I would do it. I would love to give them happy lives. But I can't. There are thousands of children who are extremely poor, don't have any (non abusive) family and live in terrible countries. And of course, their health is horrible as a consequence of the other factors. And nobody is going to save them. In these cases, even if they are not rational, they have a lot of valid reasons to CTB. I feel like saying that they shouldn't CTB because "suicide is tragic" is selfish. Their lives are even more tragic.
Your point seems to boil down to "kids can do it because when they're dead nothing matters" (tell me if I'm wrong). But you don't know that. You don't know that it won't matter.
But I know! If you are implying that there are some kind of afterlife, we know it doesn't exist.
Of course, we don't really know. We don't know anything. Maybe you don't exist. Maybe I'm crazy and none of you exist. But our decisions should be based in the most likely possibility. And the most likely possibility is that our conscience is connected to our body, and therefore we will stop existing once our body stops working.
I'm not going to talk about the universe argument. It's too abstract. We should focus in what we know, in our lives and our world.
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It is the same if the argument is "it doesn't matter after their dead.""
When you are torturing someone, they are currently living. When someone dies, they are not living. That's the difference. I think we all agree in that CTB should be as peaceful as possible.
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The thing that doesn't make sense here is you claiming brain maturation doesn't exist."
I'm not saying that brain maturation is not a thing, I'm saying the opposite. The brain keeps developing constantly.
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(How is it not true?)"
I'm saying that living is not necessarily the "most" correct choice because life has not value by itself. But, as someone else said, we won't agree in this point.
"They don't know anything yet. How are they supposed to make an informed decision when they're by nature uninformed?"
They know a lot of things, they are not "idiots". Especially if we are talking about teenagers. I understand your point, however. Yes, they are not fully rational and they don't understand our world. But in the example I used, that kid has valid reasons to do it. And they have all the information they need. What they don't know? They are in a horrible place and they will die anyway after a lot of suffering. They don't want to do it because of a misunderstanding or because of ignorance.
You can't compare CTB to a kid touching a hot stove because touching a hot stove is always bad. In some cases, however, CTB is a valid choice.
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Evidentially parents have the obligation to live for their children, as Namelesa stated. Do you also believe this?"
Parents don't have an obligation to live. Parents have an obligation to protect their children. And they need to live to do that. But children don't have any obligation that requires them to live, so they don't need to live.