http://www.ssa.gov/retirement/1960.html
there's the chart. if you wait til 67, you can still expect to live many more years past that date then people did when it was begun. it's unsustainable, especially with us now putting in less than we should be. that tax 'cut' should be allowed to expire. it's not a tax that you're paying less, it's your ss withholding that is lowered. of course employers still must pay their full share of 7.5%.
and i don't care if the pols are with the dem party, rep part, or an independant-tough decisions must be made, the sooner the better. the longer the wait, the worse the hits will be when they come. and they will come.