I don't know how much you understand about the economy but very high deficit spending is injecting big amounts of cash into our economy in the short term. All is well for some people but we have real structural problems. Debt service is the third highest budget item and growing very fast. Medicare needs to be dealt with before social security. The tax cut was abject stupidity and we paid dearly in having to finance the wars through increased selling of treasury to China and Japan. Imagine if China stops buying our paper - no let's not because shrub has gotten our country into terrible shape for the future.
Our military has some real problems, our economy in case you don't realize it is not in great shape because the average worker's wages has not kept up with inflation.
As for the democrats going ultra left I don't see it. I think the social conservatives have high jacked the Republican Party where there use to be proud moderates like Rockefeller. What we have left in the Republican Party is a conglomeration of religious whack jobs, social conservatives, bigots, fascists, and neo-cons that have no understanding of what it takes to have a functioning society.