Because you and I paying higher taxes is apparently good for the economy.
Why can’t I keep the money I earned? If you and I and joey down the road all spend the same 30k... I think we are happy. However, if you and I have 30k each skimmed off and put in someone else’s pocket, that’s stealing.
The thief will spend it the money you and I earned, they just didn’t have to work for it.