I don't have a patch jacket because I'm indecisive and like what if I put the large back patch as a band I don't love that much later and get too lazy to change it and have misrepresented?!? ANARCHY!
You're probably almost always wrong. The irony is this kind of vapid judging of one's character based on a patch jacket is itself mentally teen aged.
Every metalhead I know that wears a patch jacket is mostly just a normal, hard working person, sometimes with a family.