Our entire economy is a pyramid scheme. It's because of the nature of our money.
You're taxes are going to go up to pay for it no matter what happens, the national debt (currently increasing at something close to a trillion dollars every two years) has to be paid or everything comes down on us. Your SS taxes you are paying now are not paying benefits to anyone, they are funding the daily operation of the government (part of which is paying back into the SS 'trust fund' that has been looted in the past, but that is repaying a debt, not providing benefits). You have no future, get used to it.
currently increasing at something close to a trillion dollars every two years
It is even worse than that. The national debt has been increasing $2.06 billion per day since Sept 30, 2003, which works out to $1.5 trillion every two years. The amount will go up due to compounding. The cost of servicing the debt will go up even faster. In FY 03, the USG spent $318 billion on servicing the national debt, the third highest expenditure in the federal budget behind DOD and the entitlement programs.
Check out this site: http://www.brillig.com/debt_clock/