I suggest people don't crunch numbers because as an accountant, I know you can make them come out the way you want - especially with two tricks - your TVM assumption and your salvage value assumption. And that isn't helpful. I've watched a LOT of number crunching on this board with some INSANE assumptions over the year - including salvage or resale value - often just done plain old wrong - in order to make a purchase sensible that isn't remotely sensible. I've watched people with real skill with numbers figure out the numbers game - doing an admirable job - and watched it be misinterpreted by people who don't understand time value of money - who frankly seem to be "but I have checks left!" financiers. I believe its a binary thing based on two yes no questions - can you afford to spend $$$$ to buy
DVC, knowing tomorrow it might be bombed and after a few years you might get an insurance payout? Yes. Does it fit your needs? Yes? Buy it. If you can't afford to lose the dollars - and I mean lose every penny, don't buy it. If it doesn't fit your needs, don't buy it. Binary. And because there is no "I can just afford it" (if you are there then no, you can't), you don't need the numbers - you know if there are extra $$$$$ sitting in the stock market that you can pull out for DVC and if the dues bill will be "oh, time to pay that."
Maybe they will have resale value, maybe they won't - we are in the middle of the old Chinese curse - we live in interesting times. The one thing I would state is that if your partner has their heart set on BCV and you talk them into Riviera for the extra years, any value there when you sell it may not be worth the years of "gee, I really wish I wouldn't have let you talk me into this." "I'd really like to be at BCV right now" "Wouldn't this be a great time for our kids to be at Storm Along Bay" or the worse "you never listened to me, you always discounted my feelings" - divorce is much more expensive than a BWV contract. So is what some people here have done - bought the cheaper contract because "it won't make that much difference" and then pay the commission and closing cost to sell that one and buy where their heart was in the first place. I have learned over my years that spending more to get what you want if you are going to have to live with it - when the dollars aren't critical - is a much better idea than making a financial decision and spending a decade saying "the other couch was really much more comfortable."
Now, if you don't care where you end up, then you can think about getting the most bang for your buck.
The other thing to realize is that a lot of the current owners who are saying "I will be 80 when my contract expires, I don't care" have owned since before the end dates started getting pushed - back when all the contracts ended in 2042. That's the case for me. I will be 80 and don't care. But I also had no choice in contract end date when I bought. I will have gotten 40 years of value out of DVC (or have sold it for SOMETHING before then). If I do play a numbers game, we've gotten a ton of room value out of our DVC purchase and more than made up the dues and purchase price - even with TMV over rack rate. If I'm honest with the numbers game - we would have never taken guests with DVC and would have taken far fewer trips, staying in moderate studios rather than two bedroom units. We got value - we didn't save any money.