Then why not just have a flat tax. That way everybody pays the same percentage of their income with no deductions. No exemptions for children, etc.
Or - better yet - why have a tax on income???
As the saying goes - “What’s so fair about a tax on income?”. In fact, there is an article by that name that clearly spells it out.
As the old saying goes ...
“What’s so fair about a tax on income?” In fact there’s an article explaining just that on FR (merely click on the link below and use the entry “(Excerpt) Read more at freerepublic.com ...” to get to the main article - parts 1 & 2 - from here:
http://www.freerepublic.com/focus/f-news/1649504/posts