I could make a whole heck of a lot more money on that 6% of my paycheck by putting it into an investment of my choosing than I'll ever get from Social (In)Security.
Then you should do so. We pay into Social Security, and add a lot of our own money to our own savings and investments. On top of SocSec, 10% of each of our paychecks goes into our 401(K)s, and we add money over and above that to other accounts as well. It CAN be done.