I'd suggest there are other choices. Off site can mean better hotels, larger rooms, more resort amenities and a LOT cheaper.
Yeah, maybe it didnt come out clear... thats the on site vs off site part of it. If you dont mind staying outside the park area you can get the normal range of room options at less than half disney prices.
The other half of the equation is that if you're renting $80 rooms dvc will never make financial sense. Each point is equivalent to something like $15-18 per year as a cash if you booked directly with a 25-30% off promo that they do fairly often.
Everyone's cost per point varies but if you buy direct looks something like $10 per year Per point. ($170/ 45 years on the contract + annual dues of about $6.50 per point)
Buying resale varies per resort but its well known the best value is Saratoga springs. For example $80 per point/ 42 years on the contract + annual dues of about $5.50 per point make the annual cost per point closer to $7.50.
So using my last trip to aulani as an illustration, I paid cash to book a 2 bedroom garden view villa in mid march. We stayed 5 nights and got free meals at the ulu along with 30 percent off. We paid just over $5000 for the whole trip.
Using dvc points, Id need 62 points per night for a total of 310 points. If I used direct points, I could have paid the cash equivalent of about $3000 (but no free food for dvc

). If I used resale ssr points, I couldve paid the cash equivalent of about $2300 (again with no free food).
So you can get a good value IF you can guarantee that you'll spend that cash anyway.
On that same trip we also rented a 3br house directly on the beach in haleiwa for $225 per night for 5 nights. With cleaning, tax, etc..., we paid close to $1500 for that. Even comparing it to ssr points, the house was much cheaper, and a much different experience than a disney resort; no one else around, private-ish beach, back yard, etc...But no pools, no lazy river, etc... but renting these awesome houses can be tough and with 4 kids regular hotel rooms are not going to happen ever again hahaha. We are already forced into the suites wherever we go.
Really in the end it comes down to will you be spending the money anyway. For us we really wanted to go back to aulani (my wife would like to go every year), we live in so cal so we might use the grand cal every now and then to get into the parks early and we are planning disneyworld in the spring. If we use it even half the time we come out ahead.
Plus at the price I bought for I can rent points out for more than my annual costs if I dont want to use them. I pay an average of 7.50 per point per year and plenty of places will rent them for 10-12 per point. It's not the best investment plan but my points shouldn't ever be a financial drain. I can also sell them when they are no longer useful to me and get back some of those costs as well.
Overall, for me, the plan made sense. You just need to consider how you'll use it and see if it fits. If so then consider whether you have some must have type demands. There are one or two resorts that are hard to book and a few key weeks of travel where many resorts are booked regularly before the 7 month window. Most of the time it's no trouble, but spring break and christmastime are usually pretty full from what I can tell.