If my GP comment is true to some significant degree, it matters for people who are prodigies. It matters for the world, which benefits from the prodigies.
But I don't want to underemphasize the first or overemphasize the second. These are human beings, which is the overwhelming issue. They have the same needs and same importance as everyone else. That means we don't want to disregard their needs either because they are unusual and therefore more expensive to nurture, or because the world benefits from them and and doesn't care about their individual needs or thinks their needs can be sacrificed.
And on a similar basis, it has strong implications for all the other kids in the world, who need stable, loving, nurturing family.