Why do you ignore the truth. 73.1 percent of all tax units (in 2015) do pay either federal income taxes or federal payroll taxes. In other words, plenty of people who don't pay the "income tax" pay taxes on income via the payroll tax. That income tax is assessed at a flat and regressive rate of more than 15 percent, once both worker and employer shares are included. (The employer share negatively impacts the employees' wages, of course.) In 2014, payroll taxes combined for a total of 34 percent of all federal revenues in 2014, or one trillion dollars. (Those who don't get a paycheck pay the aptly-named "self-employment tax" in its place.).
You're also ignoring the fact that many people who aren't paying income taxes right now, are likely to have paid those taxes in the past or at some point in the future. You also conveniently ignore the reality of federal excise taxes, state income taxes, and variety of other taxes that are often less avoidable than the federal income tax.
Having said that...who said I was for lowering taxes? Who said I was in favor of raising them for that matter.
There's just simply not enough smoke and mirrors to disguise the fact that this tax plan does little to grow the economy (unless you believe in mythological creatures like Santa, The Easter Bunny and Supply Side Economics), does little to help the non-wealthy, while exploding our debt even further. It is simply a give away to the very wealthiest whom need it the least.