This year, we only had to borrow three points, and that's as close as we've ever come to not borrowing!
What happened was that we bought our contract with a "Magical Beginnings" credit in 2002, where for $X applied to our down payment, we "sold" our first year's points back to DVD. For various unplanned reasons, we ended up with the opportunity to return to WDW a little later that year, so next thing we knew, we had borrowed a whole bunch of points to make that trip happen. Each year, we've borrowed fewer and fewer points, but we're still not down to 0 yet.
I think the 3-point deficit will continue next year, as I'm eyeing up accommodations that will use our entire point allotment. This will also be our first time in a 1-BR, which I know means we'll probably never go back to studios. So from here on out, it will be continuing to borrow or (dare I say it?) adding on.
As other posters have said, I think it's much easier to borrow than to bank. The banking deadlines are meaningless if you've already "spent" this year's points! Borrowing is easy and painless.