I think Marx's idea of a 100% inheritence tax is a terrible idea for just the whole demotivational aspect, but some inheritence tax is necessary to prevent aristocracy since wealth is power. An inheritence tax is necessary to push us towards meritocracy where more wealth is generally only gotten for harder work and greater contribution.

If we ever do abolish the inheritance tax, we should call the bill "The Paris Hilton Empowerment Act."