I think you’re missing the point. Having a child for Narnia is not selfish, it is literally for the good of Narnia to have another strong Narnian. But you’re operating under a moral framework where even the good of Narnia is ultimately good for the Narnian, therefore it is selfish to want Narnia to be strong.
Do you have to agree with the idea of a strong Narnia? Of course not. But it’s a very narrow way of thinking to explain every human motivation through selfishness.
I think you’re missing the point. Having a child for Narnia is not selfish, it is literally for the good of Narnia to have another strong Narnian. But you’re operating under a moral framework where even the good of Narnia is ultimately good for the Narnian, therefore it is selfish to want Narnia to be strong.
Do you have to agree with the idea of a strong Narnia? Of course not. But it’s a very narrow way of thinking to explain every human motivation through selfishness.