Often I use the calendar appointment to save meetings notes, etc. about a
meeting. But it is often the case that a recurring meeting gets cancelled
earlier than anticipated. Unless I delete all future instances by hand, I
lose all of the customization I've made to the historical appointments. Among
other things, I try to use OL as a historical record of how I've spent my
time...and this screws that up. And heaven forbid if a recurring appointment
was set up with no end date, then its on my calendar forever unless I choose
to blow away all the historical appointments too.