Why do you use a Singular Why? I think we need to use the Royal Why much like there is a Royal We. The reasons why Trump won are Legion just like the reasons why Hillary lost are Legion.
But no matter what the Electoral College says (and Trump did win this, and thus he is the legitimate President), the same Why that lead to his victory, also lead to a form of a lost. Remember 2.9 million popular votes more people said I rather have Hillary than Donald Trump.
And Hillary is definitely no angel so what does that say about Trump?