Unless you are in 15% of jobs- you'll be forced to retire.
Good thing is, worst case you'll get about 85% of your social security benefits. This could be fixed if they raised the limit to 500k salary and raised the tax by 1%. Pretty small change so the problem is partially theatrics.
Bad thing is, those will only cover about 70% of your needs so you will need something to fill that gap. Medicare looks in trouble. It could be fixed if the U.S. offered to pay for medical school in return for lower cost service as germany does to doctors. And if we broke the medical school cartel and ramped up the number of doctors like we did during world war 2.
Save hard- as in 50%. I did and was able to retire at 51- not on social security for another 16 to 19 years.
Another stock market decline is coming soon (probably in calendar 2015). Hopefully 20-30%- but it could be another 50% hit. When the 100dma crosses back above the 300dma again after the bottom- that's when you put the money in and let it rise for years without having to do anything. That will multiply your savings.