No known person has been through a black hole. The nearest known stable (stellar mass) black hole is too far away for us to reach with our current technology, and an encounter with one would almost certainly be fatal.
Nobody went to any black hole, I can tell you that. If anyone were to go into one, they would be spaghettifyed! Also, if anyone made it into a black hole and went down all the way and came back out to live to tell the story, they'd go down in history.
No one has "seen a black hole" but evidence of where a black hole must be has been observed.
Pick anyone and there will be black hole in it.
No. Tomorrow has been and gone and no black hole has appeared.
Anything and anyone that ventures too close to a black hole can be pulled into it.
No. Why would anyone think so?
No. We have never even directly observed a black hole; only the effects of what we think are black holes. The nearest black holes are many light years away, much farther than we have ever been eable to explore. We can only observe through telescopes.
No rubbish has been sent into a black hole.
Well, since nobody has ever been in a black hole....... what do you think?
No, you'd die from tidal forces and ionizing radiation long before you crossed the event horizon and entered the black hole itself.
Observing a dazzling light from a black hole is impossible because anything cannot come out of black hole once after entering it's event horizon (even light) because black hole very very very strong gravitational field.