Olympia,
"But neither is the prospect of irrevocably giving my money to TIAA with an assurance of nothing more than a 3% return."
I'm not advocating annuitizing, especially as I haven't, but the fact is that the guarantee of 3% (actually, it's 2 1/2% if one annuitizes) is merely meant as an assurance that you will never be without a return at all. I believe that it comes from the days when banks and insurance companies went belly up; having taken peoples money and leaving them nothing but empty promises.
In actuality, the company has never missed paying a healthy dividend in addition to the guaranteed amount.
Personally, I have a very small pension from the Musicians Trust Fund, that I would have built up except for having reason to distrust the Union that it originated from. I don't rule out partial or even completely annuitizing thru TIAA in the future, though.
Sy