I don't consider SPIAs insurance. To me, insurance is pooling risk. Paying some money in order to protect against a major event that is more or less unlikely to happen, but if it does, will likely cost me a lot more money. You can slant your head and make a case that it really is like insurance, but it's a lot more logical to me to treat it as an investment.
I very much consider it an investment option, at least somewhat comparable to bonds, TIPs, CDs, and other instruments that offset the risk of equities. It is different in that it is a guaranteed income stream (as long as the company stays in business). It won't be eroded as you dip into your principal, so this is a good tool if you are worried about outliving your assets.
I think that posts #3 & 4 show why this isn't like insurance. Unlike going a few days without car, home, medical, or life insurance, where an event could totally wipe you out, the SPIA decision can be deferred to a more optimal time to buy one. Sure, there is market risk too, but that seems very different to the other risks we insure. Mainly, if I stay in the market my money could double just as easily as it could halve. With the other kind of insurance, deferring it just saves me the cost of the premium.
An SPIA is a tool to provide income for my retirement, very much like my other investments. Thus, I'll treat it as an investment, and measure the risk/return like the others. The return is probably not that good unless I outlive the actuarial tables by a lot, but if I only considered return without risk I'd probably be 100% in equities, which I am not.
Am I the only one that thinks this way, and the rest of you consider it insurance?