From what I've read, US tax burden is pretty similar to Europe if you include health insurance costs, you just get less for it. Property prices are the main thing that seems much worse in Europe, but that doesn't have anything to do with taxes.
Donating my income is besides the point, as it's the top income brackets that really need to be taxed. I would and do happily vote for higher taxes on myself when the option is available.
> US tax burden is pretty similar to Europe if you include health insurance costs
The U.S. collected 10% of its GDP in taxes in 2020 [1]; France and Italy did about 25%, Germany 11.5%. (Switzerland and "communist" China clock in below 10%.)
There is sufficient variation in tax policy across the EU, let alone Europe, to make broad-based comparisons meaningless.
For the US you're missing some taxes, too because the overall is somewhere near 30%, 10 percentage points lower than Germany. I think your US link does not include state and local taxes etc
Donating my income is besides the point, as it's the top income brackets that really need to be taxed. I would and do happily vote for higher taxes on myself when the option is available.