Really, when talking about taxation, one of the biggest problems is children.

If parents’ income level wasn’t, de facto, the income level of their children, the rich-poor gap wouldn’t be such a big deal. But that’s not the case; a poor parent has poor children. They have fewer economic opportunities available to them. This is something most people talking about rich people deserving their wealth don’t really engage with; the children of the poor have not had the opportunity to either deserve or not a certain level of material wealth. They’re dependent on their parents for it.