what you are describing is a RESULT of inflation. a result of inflation is a steady rise in the price of everything. in an ideal society incomes steadily rise as do prices as the monetary supply grows.you see by definition inflation is when 1 dollar no longer buys 1 dollar worth of stuff, it suddenly only buys .50 cents worth of stuff.
if you look at income and buying power in our history, you will see that yes we make more money then our grandparents did in the fifties, but we cant buy as much stuff,
inflation is a tricky term to be throwing around....