>>>believe as I do that income shouldn't be taxed at all?
>Many corporations and wealthy individuals do pay little or no income tax.
>http://www.nytimes.com/2013/05/21/business/apple-avoided-billions-in-taxes-congressional-panel-says.html?pagewanted=all

40%+ of Americans pay no federal income tax.

>The US income tax was instituted to finance the Civil War. As with most taxes, when the justifying purpose disappeared, the tax remained.
Minor history nitpick : The Civil War era income tax went away in 1872. A new income tax was established in 1894. A year later it was ruled unconstitutional by the Supreme Court. The16th Amendment made income tax Constitutional and effectively permanent.

>When I last looked there were a couple of states without income taxes, but I'm not sure if they're still hanging in there.

They are.
http://taxes.about.com/od/statetaxes/a/tax-free-states.htm

>I can't envision what no income tax would be like and at my age I'm fairly sure that I'll never find out, but the present tax code discriminates badly against low and middle income taxpayers and should be changed.

It discriminates against everyone. Even the big bad corporations and the evil super rich have to hire teams of lobbyists, lawyers & accountants to hold onto their own money.

"Our Income Tax system is a disgrace to the human race." - Jimmy Carter 1976
http://beforeitsnews.com/mediadrop/uploads/2014/15/2cfe6147daf41b81f4c29ed65f8f691bd4918156.png

Update : At 70k+ pages can anyone be sure they're fully compliant?