Who do you think is going to get most of the the $425 per person diversion fee, an amount which totals $127,461? If your guess is the Monroe County Prosecutor's Office, you'd be correct. From what I learned, at least 1/3 of the budget of prosecutors' offices in the large state university towns - think Monroe County (IU), Delaware County (Ball State), Tippecanoe County (Purdue) and Vigo County (Indiana State) - is funded by college students paying diversion fees to avoid being prosecuted for alcohol offenses.
Moving to a more reasonable law on alchol consumption, e.g. changing the drinking age from 21 to 18, would result in prosecutors' office no longer being able to fleece the parents of college students to fund their budget. Like with civil forfeiture, these diversionary programs too often become all about the money that law enforcement can net from the program, not what is in the best interests of society.