"People" meaning the American population in general... Why won't people learn from other countries, and why won't they learn from our past?
The happiest countries on earth are usually Norway and Denmark, although it shifts frequently. Both of these countries are social democracies. Perhaps I shouldn't expect the entire population to instantly embrace a system that leans so far left from our own, but I would definitely expect (and hope) people to give it some serious thought, and take stats into consideration.
Russia lost the cold war because their economy collapsed. Why? It was their military budget. This one should be a no-brainer. But in 2012, 60% of the federal budget is going to military spending.
Last, we have a lot to learn from our own history. Even Ronald Reagan, who leaned VERY far right by the standards of his time, proposed something similar to Obamacare while in office. And yet, conservatives say that politics are leaning farther and farther LEFT. Surely there are enough people that are 50+ years old who will remember that things used to operate differently... So why has nobody brought this up?
I would offer sources, but I would just get flamed for citing a biased source.