Because was the scared of Cheney Hilary is an easy target, she doesn't shoot people in the face.
It's clear you really believe what Hilary has done is unforgivable and the worst thing that a any of the potential presidential candidates has done. More power to you, to me it is certainly not beneficial to her, but one of the candidates may very well have rigged the 2000 election to help his brother become president, another fled prosecution in his own country, but does not think others should be allowed to. Ben Carson has lied about all kinds of things in his past, the list goes on and on.
At the end of the day no Presidential Candidate or person is perfect we all have flaws and make mistakes, but to you the investigation into Hilary is a huge deal. To me personally hypocrisy is the most annoying thing, but that might mean little to you. That is your choice and keep preaching man, but I don't think in reality this whole situation will have much impact. It is fodder to use in the election and there will be plenty of other issues raised about all the candidates as we move forward.