I've run my numbers before: I paid into SSA (my share and my employer's) $373,422.90.
Using SSA's reported rate of return over the years, my balance would be $1,424,959.74.
If I had invested that money in the S&P 500 over that time it would be $4,574,750.18.
At my current level of benefits it would take 16 years to get my deposit back. It would take 59 years to get back my deposit plus what SSA says I earned in interest. It would take 190 years to get back what I would have earned if I could have invested in the S&P 500.
Kill SSA - give the money back, eliminate the Ponzi scheme, remove Congress's money trough.