TC, you seem to contradict yourself. The second half of your post seems to indicate that you agree with GRtak - same percentage tax, regardless how much you make. GRtak was outraged by the example of a businessman being taxed at a lower percentage rate than his secretary. Wouldn't you agree he has to be taxed at the same rate as her?
With all this nonsense with Trump, it seems a lot of people don't realize that "your fair share" is whatever the tax code says it is. For example, the married couple next door that have 3 kids pay a lower tax rate than me, despite being more of a burden on the tax system. Are they not paying their fair share? Of course they are, since raising children in a stable 2 parent household is a massive benefit to our system and the continuation of our society. They're contributing in ways that I am not.
And the same logic applies to businesses. They're kinda sorta important to society too. So our tax code gives some breaks to them, since they contribute to society in ways that individuals do not.
But since that logic is lost on most people, I think a flat tax rate would be preferable. It would certainly benefit me, as a singe dude with no business ownership. Lets have the same rules apply to everyone. No double standards.