Allomancy was valued, even while it was secret. You have to Snap to manifest. It's - usually it's done in the noble families by having someone someone come and beat you until you almost die, but not quite.

Mistborn are the most powerful of all Allomancers. When I Snapped, they all congratulated me. Allomancy is... it's a part of me, but they were happy - he was happy because he would have an assassin. A weapon. Like I told you, when we were children.

That was when I knew I was alone.