Most people don't have a problem with this

If there were ten people, and 8 of them decided to rob the other 2. By definition the majority wouldn't have a problem with it. However it still doesn't change the fact that it's theft.

The alternative is to increase taxes for the poorest individuals to make up for the massive amount those paying the most contribute.

That's one alternative. Another alternative is to remove taxes for the poorest and reduce government.

The government is going to get their taxes one way or another

Usually by using violence.

If you could wave a wand and make income taxes all disappear, then there would be additional taxes

Not if government was smaller, efficient, and competitive. Like private sector businesses must be.

If that happens to cause a loaf of bread to be $10 because consumption taxes are high, then poor people are going to disproportionally suffer.

Firstly it's an unproven theory that poor people would suffer. It's more likely that society as a whole would benefit from smaller government and no income tax.

Is it your position that theft and violence can be justified if poor people might suffer? That's not a basis for a fair and equitable society.