There is NO bracket that is 8%; NONE !
And it is extremely doubtful ( impossible! ) that 99.9% of Freepers have a taxable income of $90,000 or less.
In NYC, a married couple, with the wife being a teacher and the husband a firefighter would have a taxable of income of at least $100,000.
Many of your fellow FReepers, all over this nation have all kinds of different jobs, with different incomes. Painting with such a broad brush, as you do, is wrong; no matter what the topic !
I guess you didn't go to the calculator site and actually look through it - lots of FReepers are retired and married, perhaps the 99+% was off but you seem to have deeper issues so I'll leave you to them....Since you assert that so many are making so much, perhaps you would be interested to know there is a FReepathon going on - here's a handy link...