Here's the thing. You like to point at those numbers, thinking they resound with the average voter. They don't because the average voter remembers what it was like 5 years ago, look at their lives today and realize that they have to work a second job just to keep up with what they used to have. A "strong economy" that doesn't seem like a strong economy does no good. You have to have something that the average guy says, "Yup, doing okay and don't want to shake things up".
You had a really, really awful candidate. Once she started talking, people envisioned her in a meeting with Putin, having no teleprompter, spouting off the nonsense she often did, and said, "No way".