[1] US, Greece, UK, Estonia, Poland are the only NATO members who pay at least 2% GDP in 2016. http://www.nato.int/nato_static_fl2014/assets/pdf/pdf_2016_0...
I think the real fault lies with DNC. Why were they so hell bent on having Clinton picked when Sanders excited so many young Democrats and did better in earlier polls?
Trump and Hillary had historically high unfavourable ratings, and Bernie is quite popular. The socialist label was worn out somewhat on Obama, so it doesn't carry the same sting. He doesn't have anywhere near the baggage that Hillary does, and had policies to address some of the white working class concerns of the rust belt, and shared some of Trump's skepticism about free trade offshoring jobs. He would've gotten all of the "anyone but Trump" votes (as Hillary did), plus he had a bloc of genuinely excited voters who enthusiastically supported him till the end, potentially meaning greater turnout. Not saying he would definitely win, but in head to head polling he did better vs Trump than Hillary did.
Sanders is old. Old people have skeletons in the closet. Sanders wasn't a big deal long enough for the press to have really dug in and started dragging those old skeletons out.
Sanders had a similar message as Trump, just a bit different flavor. That resonated with the voters. I think Sanders would have grabbed more electoral college votes but to win, no idea. Hindsight and all that
In four years, we'll gather and vote again, and transition peacefully again.
[0] http://www.ibtimes.co.uk/julian-assange-predicts-donald-trum...
Much of what Trump want to do isn't something that the US can actually afford to implement. The worst thing Trump could do is the take the US in an isolationist direction, but that's not going to happen because it would hurt the wealthy people... like Trump.
One extremely positive thing that could come of all this is that the rest of the world starts taking more responsibility, and intervene earlier in conflicts, now that the support of the US military isn't guaranteed.
EPA may lose funding. The world will begin feeling that in about a decade.
Department of education will likely lose funding. The US will lose the STEM race to India and China. We'll feel that in about 20 years.
Clinton is more interventionist than I'd like, but at least her proposed interventions have some sort of thought and reasoning behind them, even if I may not agree with them.