well most ppl dont think of what a black hole is. if you were floating a foot above our planet you have x amount of gravity pulling on you. if the whole earth collapsed into black hole you would still have the same x amount of gravity pulling on you.
hence even if a few atoms made a black hole then the gravity they exert on surronding matter would still be the same. you would not have a maddening spiraling in of matter into it.
But if I threw a black hole at your face, it would swallow up your face, and then your chest, and then your toes, and then it would fall down to the center of the earth, getting more and more mass, until it reached the center and.... hung there.
Then we'd have to fill in the hole it left.
I don't want to fill in the hole. And we just threw it at your face, so you're in no condition to be filling in holes.
I guess we could build a tiny bridge over the hole. And young lovers could throw in coins while making a wish. Which would just add the coin's mass to that of the black hole. I think it's also a felony to deface money with black holes. So they might get a fine.
We could also dump toxic waste down the hole. Some would soak into the sides as it fell and get into our ground water, but the majority would fall all the way down to the black hole.
....I don't want to get back to work. You can't make me.