There are a lot of high QOL countries with specialised tax systems that don't tax all income. However, since the US government taxes your entire income above a

There are a lot of high QOL countries with specialised tax systems that don't tax all income. However, since the US government taxes your entire income above a certain threshold globally, there's not much you can actually do to optimise taxes. Nearly all non-US citizens can move to a country that does not tax capital gains (on crypto) to avoid tax.