You are mistaken. Currently, the higher income you have here, the higher tax rate you have, where the highest tax rate on income sits at 47%, which you get hit by when your income is above 300K/year. People between 60K and 300K sits at 45%.
And then there are regional differences, someone in Andalucía don't pay the same amount of taxes as someone who lives in Catalunya for example, where the top tax rate is 50%.
Even taking into account other taxes we have, you still end up paying more in taxes the more you earn, unless you start engaging in schemes to lessen your tax burden, obviously. Although the social security is capped, so it does increase slower once you go beyond the cap, but it doesn't start regressing which your comment hinted at.
Edit: important to note that the tax rates are all marginal tax rates, maybe that was a bit unclear.
If/once you reach that point (+60K/year), you already live a above-average life, why not share some of that with others who aren't as good/lucky as yourself? Seems like a no-brainer to me, but I might be too European to really grasp the problem.
It's not hard for tech workers to start hitting top rates similar or higher than that in the US if you're in a high tax state, but at 60k you're more likely to top out at 39%, but because the curve is so steep the average (actual percentage of income) tax is only something like 22%. That includes extras like social security and Medicare.
Living in a state without any income tax will further lower those numbers.
Sure, but how well are those without income supported in those states? Can they live a comfortable life even if they're unable to work? Can they go to the hospital and do life-saving surgeries without being in debt for the rest of their lives? Are there enough libraries and beyond-school activities everyone could use for free, regardless of income?
Once you hit those rates, I feel like you should stop thinking about how you can pay less in taxes, and figure out how you can support everyone else around you, otherwise what's the point of earning all that money in the first place?
Taxes are the fees you pay for living in a nice society