Why do you need a PIN for maple story

becuz if you don,t then people could find the password and user name easyer and if that happened they could mess you,re hcars all up and delete them and stuff so that's y they make you have to have a pin for safety hope i helpd cuz that's true you know if you don,t believe me then that's alright but i,m serouis that's y they make you have a pin soon soon i mean bye X3 hope i helps<3<3<3