It's like a low-information mind saying "I'm sick and tired of having AIDS, take your virus-destroying nanobot offer and go bother someone else!" I guess in that situation, you kind of scratch your head, and then say something like "OK, Darwin at work. Seeya."

Well, see, currently you don't have any empirical evidence that your nanobot cure won't kill me swiftly and I suspect it would, so your apparent insistence that I inject myself with it right here on the spot sounds a lot like those black plague merchants to me. I would be in favor of testing the nanobot cure (assuming the nanobots aren't self replicating), but please don't start the testing with life humans.