Because we must have the government and taxes. And I think it is better to tax wealth than wages.
I disagree. Given increases in productivity, we should work less. If we tax wealth but not wages, we may end up forcing people to work for no good reason.
We do tax "wealth." Ms. hilton doesn't keep her "wealth" in a box. She invests it, so that her "wealth" will, at least, keep ahead of inflation (a de facto "tax" on wealth). Much of what that "wealth" earns is taxed, even though that wealth provides affordable capital for everyone else. While in the free market, that "wealth" is invested far more efficiently than it is when done by the government.
If your concern is that the cost of government be paid for, maybe you should push for (gasp!) less spending. There is no reason why we "must" have income or wealth taxes, this country got along just fine without them for over a century.
If, as your other statements in this thread indicate, you're looking for some kind of social justice, you're a socialist.