Majin Ephraim said:
2. If white holes exist, they actually return matter, making it inappropriate for the situation.
White holes do in fact not exist.
Wikipedia said:
A black hole is a region of space in which the gravitational field is so powerful that nothing, not even light, can escape its pull after having fallen past its event horizon. The term “Black Hole” comes from the fact that, at a certain point, even electromagnetic radiation (e.g. visible light) is unable to break away from the attraction of these massive objects. This renders the hole’s interior invisible or, rather, black like the appearance of space itself.
(yes i know Wikipedia is the devil but I used it as a source anyway, get over it)