That curve works both ways. There comes a point where tax rates can be too low, and have diminishing returns in regards to motivating people to stimulate the economy and start to impact the availability of services.
America has always had individual taxes. Originally it was a poll tax and a property tax. Of course back then, the services provided by the government were limited and defense was militia based. With additional costs comes the increased need for more revenue.
We will always have taxes. Taxes and tax rates are not the current problem nor are they the solution. Spending control is what the discussion must center if we are to have a situational improvement.