Why can't we manage our social security benefits

The government is now referring to our Social Security checks as a Federal Benefit Payment.
This isn't a benefit.
It is earned income! Not only did we all contribute to Social Security but our employers did, too.
It totaled 15% of our income before taxes .
If you averaged $30K per year over your working life, that's close to $180,000 invested in Social Security .
If you calculate the future value of your monthly investment in social security( $375/month, including both your and your employers' contributions) at a meager 1% Interest rate
compounded monthly, after 40 years of working you'd have more than $1.3+ million dollars saved!
Tell your Congressman if The Benefit stays you want control of it. It's your money that was invested & you paid taxes on when you earned it. It's $