I suppose if I were younger, I would be investing in Africa.
It seems to me that the least deserving recipients of wealth are inheritors. Further, there are many indications that inheritors often have trouble adjusting to their unearned inheritance. An inheritance tax would de facto help remedy this.
Our mandate is to find the 200 best companies in the world and invest in them, and find the 200 worst companies in the world and go short on them. If the 200 best don't do better than the 200 worst, you should probably be in another business.