There are arguably much more "regressive" things out there, that are completely avoidable. Inheritance tax, on the other hand, usually has a "lower-bound" that

There are arguably much more "regressive" things out there, that are completely avoidable. Inheritance tax, on the other hand, usually has a "lower-bound" that prevents the very poor from being affected. Taxes on investment? You mean, capital gains? Or something like dividends?