Two things are making a mess of Standard American English (spoken in its purity only in parts of Connecticut, New Hampshire, upstate New York, and throughout the Far West): Ignorance and Affectation. Of these, Affectation is by far the more fecund source of ghastly, stupid error. It is Affectation (a desire to sound erudite and of high social class), impure and not simple, which causes women and their imitators to say "cue-pon" instead of "coo-pon," and "between he and I" instead of "between him and me." The converse fault of pure and simple Ignorance is not, as Snobs suppose, the use of the objective cases of pronouns as nominatives (e.g., "Him and me are friends.")--which in my view is perfectly proper--but rather that Ignorance allows itself to be imposed upon by Affectation, and accepts at face-value Affectation's implicit claims to Genuineness and Gentility: People that say "Him and me are friends" are likely to believe that "between he and I" really does have a certain elegance, now that you mention it.