I lived in the UK, Norway, Switzerland and US (NYC and Bay Area). Except Switzerland I did not really notice a big tax change for any of the others.

Sure in UK and Norway healthcare and University is free, but healthcare is provided by my employer in the states. So for me it is a wash.

But hey in the US I get to pay for the largest army on the planet.

What I would say is that in the US my taxes feel the most "unfair" since my tax rate is sort of the max. Richer people have ways of avoiding taxes and poorer people pay less tax.