I don't know if 9.8% is correct.

Think about the many folks who support a family on $30-50,000. They rent, they spend every cent they own, pay sales tax on most of it, have to drive to and from work, pay into the gas tax, license their vehicle. Pay sin taxes, pay uber high taxes on their utility bill, etc.

I don't know your situation, but for those who can afford to save, I think the govt gets far less, at least proportionately.