I'm [Sic] of it all

I've been bothered by the excessive use of [sic] by those in law for quite some time now. [Webster broadly defines sic as, "intentionally so written -- used after a printed word or passage to indicate that it is intended exactly as printed or to indicate that it exactly reproduces an original."] In reality, the damn thing appears every time someone catches a grammatical or spelling error in a quote to make sure the reader doesn't attribute the mistake to him or her. Example from Civ Pro "casebook," "to any person when they [sic] are..." Alright, I get it, grammatical mistake of mixing singular and plural (person and they), but the author is quoting a statute. What are the odds that the statute actually says he, she, or he or she instead of "they?" Zero, zilch, nil. It doesn't take a genius to figure out that you are in fact, reproducing the statute as it is written with the mistake in it. So at least in these cases I see no conceivable benefit to the reader from using [sic] other than pointing out the original error for all to see. Worth it? I can not [sic] agree.

For pure entertainment, please see Common English Errors.