Right now 10-year T-Bills are pulling about 1.65, and inflation is having a nice bounce between 1.7 and 3. Let's even it out at 2 - either way, yes, you're losing money on ultra-low-risk investments. All you can hope for is to reduce the wages of inflation on your balance sheet.

BH annuity is not a bad deal, but losing 2% of your income a year will sound tolerable until about year 5... =)

If you retire mid-twenties on $5M, there's no way you'd make it through 70 on that, if you did nothing else active (read: risky) to increase your income.