Ha! Since you reawoke this thread... I'll admit I have a 11-32, an 11-28 and TWO 11-26 cassettes and (shame) I leave the 11-32 on all the time. You know what? It's just nice to have when I'm tired or every time I need to get out of my drive way (which tops out at 20% or so). If you live in the Eastern Sierras you probably know exactly what I mean - there's no such thing as a totally flat ride (near me) - there's always one nasty hill on every ride no matter where I go.
I'm not even 60 (46) but i've given up trying to set land speed recordes going down hill - it just isn't worth it to me anymore. Don't get me wrong, I love going fast but going 45 is the same as going 50 to me now... really. It's not worth pushing it.