I don't know what country you reside, but in USA you are innocent until you are proven guilty. Prove of guilt is on the prosecution side, I don't have to prove I'm innocent. This and 5th amendment works magic against being wrongly accused; it also is indeed a deterrent to "carrier prosecutors" from trying to obtain prosecution via a good-old soviet style type of investigations: "give me a man, I give you a paragraph"
Edit: don't break the laws when you being prosecuted; and BTW: I don't drink alcohol at all. Period.