Nines, to address some of your points in turn:
We won't be ABLE to vote the bastards out. In case you haven't noticed, a MAJOR, perhaps even the primary objective and effort of the Republican party is to make sure that they never lose another election. Or maybe you're unaware of all the R manipulation of election boards and laws pertaining thereto? I thought not.
I know why the Dems lost. First and foremost, they nominated a WOOMUN. That alone would have screwed the pooch. But there's an even wider ideological divide here. The Dems want to appeal to the college professors and opera attendees. The Repubs want to appeal to the people who graduated from high school with a C-minus average and attend monster truck rallies. Turns out that the latter outnumber the former.
You say you're not naive about the supposedly invulnerability of our shining hill institutions, but I've never heard a naive person admit that they were naive. Your faith is touching. I hope you're right and I'm wrong.