If you tried to throw something into a black hole, you would find that it is not so easy. The problem is angular momentum. If you miss the black hole (it is very small!), you will end up in an orbit around the black hole.

This is particularly true for a black hole pulling matter off a companion star in a binary system. The gas will always form an accretion disk orbiting the black hole. The big question now is: How does the gas lose angular momentum so it can continue to spiral into the black hole?