We're not owners but I have looked into it pretty thoroughly and decided it's not for us, for several reasons. Some of these are things that people use as selling points, but for us they're really not. Take them out of the equation and there's less and less reason to invest.
* We don't vacation at Disney every single time. We like to go other places, do other things too. And as others have said, you really only get full value using your contract at Disney resorts.
* We do like the daily housekeeping. Some don't, but we do!
* We take advantage of free dining every trip. Not for everyone, but for a family of 4 Disney adults it's a HUGE savings for us. We like to do a TS meal every day--it's part of our vacation experience--and the free plan lets us do that and not worry about what we're spending. You're not eligible for any kind of discount--whether it's free dining, stay/play/dine, etc.
* We started off doing Value resorts and now do Moderate. We're not hang around the resort people. We're go to the parks, go back and sleep people. Not worth it to us to spend the extra $$$$ on deluxe accommodations.
DVC pricing is really more comparable to deluxe level prices.
* We don't care about a kitchen! Last thing I'm going to do is cook on vacation!
* And one thing when people talk about the money you save and how cheap DVC is. Many (not all, but many) only take into account the annual dues. They conveniently neglect to mention the huge initial investment. Or they'll say something like "Oh, we paid that off right away." Or, "We recouped that price in the first X number of visits." Well, if you did, then you drastically overpaid for those first visits. And if you finance that, it's even more! If you're really thinking about it, be sure you include every penny you'll be spending over the course of your ownership.