Nobody wants another career politician for President."
Meh, it's not as if he's the first blow-in from another career...
He was just the wrong man, in the right place at the right time with the right 'up yours' attitude. People voted, ever hopeful, in the expectation that he would shake things up a good bit....
Most of the money spent on election is wasted, people vote on the personality. Trump has personality (even if it is mostly objectionable), Clinton never really shone.