If we all made our decision based off long term financial benefit - none of us would own DVC at all.
I don't agree with this. If you are the sort of person who would be staying in Deluxe rooms onsite at least semi-annually without DVC, then DVC can give you the same quality room for a much lower price point, or a much nicer room at a similar price point. This is using an amortization rate of 8%, which is quite conservative.
Compare AKV with AKL. My annual February trip is usually a full week; it falls during Peak season for CRO, and Magic season for DVC.
With the
AAA discount, a cash week in a Savannah-view room is about $415 per night after discount and taxes, give or take, at 2008 rates.
A Savannah studio in AKV for the week is 135 points. An AKV point, retail, is $96. At 8%, annual amortized cost of the purchase price is $7.68pp. Dues are $4.71, for a total annual carrying cost of $12.39pp. So, the DVC week costs a shade under $240 per night---a significant savings.
Granted, it is not precisely apples-to-apples; this is a studio rather than a hotel room, and it carries no daily housekeeping. AAA is also not usualy the very best rate you can find on this room. Still, a good deal; you're a bit better than a 40% discount off the rack rate, which equals the very best pin codes and is better than AP rates.
If you'd rather stay in a 1BR Savannah, then it's 268 points, or about $475 per night. For a
very modest increase in price over the bare hotel room, you get twice the space, a full kitchen, etc. etc.
Note that this is without the usual games of avoiding weekend nights, etc. that people play to further stretch value from their holdings.