Welcome to the forum give_me_a_glock - lots of good people here.
OC is decidedly legal in NC. Study up on the laws and links to same in the NC sub-forum.
OC acts as a deterent to threat of serious harm to you and your loved ones. Is faster from the holster when the point of last resort is reached. Is educational to the public that such is legal.
Concealed carry OTOH leaves the actor as looking exactly like an unarmed, potential victim.
There is room for both in this great big world though - it is a personal choice which we should all be free to make.