Anyway a lot of the heavy weights are in this thread. I would have thought that generating private keys manually might be termed a little extreme.
Depends on your definition of cost-to-benefit ratio:
Cost: Spending 20 minutes, one time, to create entropy and convert it to a wallet
Benefit: Avoiding 100% of all BS regarding computer-generated entropy sources & algorithms, until the end of time
If you're holding a "lot" of money, some people would rather just remove all doubt. And the cost of doing so really isn't that high.