It seems as though Bill Gates' dad - of all people! - is on my side about inheritance tax:
Apparently Gates senior's view is:
"...individual wealth is a product not only of hard work and smart choices but of the society that provides the fertile soil for success. They don't subscribe to the "Great Man" theory of wealth creation but contend that society's investments, such as economic development, education, health care, and property rights protection, all contribute to any individual's good fortune..."