The increased size and scope of all levels of government is part of the reason why everything is more expensive now. But here's the main reason that the standard of living of the working class has dropped.
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New money generally enters investment markets first, like the stock market. It enters the labor market last. There would be absolutely nothing wrong with that if the dollar maintained its value over time. But with the way that monetary policy works in this country today, the prices of the things that people need in order to live increase faster than and before most people's incomes do. It has become a game of catch up, while getting more and more behind.
As each dollar moves through the economic food chain it loses value because inflation is now a permanent fixture in our financial system. Who are the winners in this system? The people at the top or near the top of the pyramid: banks, governments, major corporations, and the people highly affiliated with those ins utions. Banks like the inflationary system because they issue the money. The government likes it because it allows them to spend money like a drunken sailor, which is what governments love to do. Big business likes it because of what it means to their value to be first in the new money cycle of an inflationary monetary system - a (seemingly) perpetually rising stock market.
It's just a question of whether your benefits from a liquidity pumped investment system outweigh the costs of an ever devalued dollar. Really, the central banking system that basically the whole world lives under is just the biggest pyramid scheme in human history. Each level supports the level above it, and the central banks are at the top, owned by private banks and creating money out of nothing. Ever smaller benefits make their way down the pyramid until they run out and turn into costs for the rest of the levels. We do not live in a free market, compe ive, and capitalistic economy; no one does anymore. We live under a centrally planned money monopoly. [/weekly Fed rant]