When do I have enough reputation?
I mean isn't there a number after which you are a permanent member that can almost not be removed? Is it the thrusted badge perhaps that you need? Did I overread that? If so I'm sorry.
No one is above removal. The list of your privileges is here.
Real users are never removed, misbehaviour may result in suspension, but not in deletion of the account. The exception are users requesting self-deletion, sock puppets and blatant spammers.