You also speak as though the party you credit with social support et cetera were not also the party of "free trade", i.e. globalization. Perhaps you'll be the first to explain coherently, and in a fashion which accords with reality, how their very successful efforts in such regard have materially benefited rural Americans.
I'm not proud of what I did on November 8. I'd have been proud to vote for Sanders in the general, as I did in the primary. But, thanks to the machinations of the DNC leadership, that option was denied me, and I faced - all Americans faced - the worst choice that last year's party primary process could possibly have left us with. I took the option less incompatible with maintaining my own self-respect, and I'm still not wholly reconciled to that decision even though I could not possibly have brought myself to do otherwise.
I live in Maryland, so of course my state's electors went to Clinton. I suppose therefore that I could, if I so chose, deny responsibility for whatever outcome a Trump presidency may have, and leverage the left's own arguments against the electoral college to do so. I won't, though, because the responsibility for, and the consequences of, my unforced actions are also mine.
I can't "own the problem", as you so facilely counsel. Problems like these are far too large for that, and I think that's a big part of why they tend to prove so intractable. I did what I still regard as the least worst thing I could do under the circumstances. That I do own. But every circumstance has its antecedents, which make possible that it occur. The circumstance of having to choose between Clinton and Trump is no different. And I think there's a lot of ownership, for the actions which brought that about, yet lacking.