My parents bring home roughly $100k together per year. They're taxed near half a million. Those are radically different.
It depends largely on where you live and cost of living there, but in many areas of the country a family income of $100K per year would be considered upper-middle class. I know there are a large number of families who would love to have that kind of income. Several families I know from various functions I attend regularly get by on 40K per year or less, even with two incomes and children.
As to taxes, some tax laws are odd and should probably be revised. No one should have to pay for taxes on some of the things businesses have to pay taxes on now.
On the other hand, the structure of a business can save you paying taxes twice (once on business income and a second time on personal income). For example, someone mentioned the S-Corporation, which is one way to eliminate the double tax. Then again, if you get greater benefits through the current structure in other ways, it might not help to structure it that way.