For Insect People, the mark is the one that will allow them to awaken their latent powers and dominate depending on their bloodlines. If it wasn't even crucial at all, no one would bother of the marks and the social hierarchy wouldn't exist and everyone would be on equal terms in power. And yet, due to this, many who are not accepted by their parents would suffer and the majority would be the unmarked babies would be disposed to avoid "incompetence".
It's a weird culture and practice to the insect people and I may never understand it but that is natural.
