The Guardians of Standard English
The so-called native speakers of standard Englishes are those people who have somehow espoused a particular set of conventions that loosely have to do with the way English has been codified and prescribed in dictionaries, grammar books and guides to good speaking and writing. This group of people includes a large number of those who, having espoused the conventions, nevertheless do not consider themselves to be excellent users of those conventions.
For many of these so-called native speakers the English language is a unique entity that exists outside or beyond its users. Rather than considering themselves owners of English, users often think of themselves as guardians of something precious: they wince when they hear or read uses of English that they consider to be sub-standard, and they worry, in their letters to newspapers, that the language is becoming degraded. . . .