Because if it *does* work for you and it *does* save you money, then it's exciting.
And whether or not it saves you money and how much it saves is going to vary wildly from one person/couple/family/group to another because everyone vacations at WDW so differently and with so many different variables.
We already had one standard POP room booked---for 4 people. A discount on one single standard POP room just isn't ever going to amount to much. We also already had park hopper plus tickets booked because we love to hop and DH is such a huge Hopper fan that he'd pass on going if we had to go without Hoppers! Plus, September's our favorite time to go. We were already planning on eating primarily at QS places because my youngest is not a sit-down restaurant fan.
So you can see that we are already set up for all of the parameters of this deal wot work for us. Now, we were NOT planning to buy the dining plan, because the dining plan would never save us any money if we purchased it. It would cost us quite a bit more money, actually. BUT, since we were planning on feeding 4 people out of pocket, this is literally free food. No quotation marks needed. Just FREE. Take the amount of credits we use, and subtract whatever small amount a Room Only discount may have gotten us, and that's saved money for us. So we're looking at shelling out about a grand less for our vacation now, and yeah, I get excited about a thousand bucks staying in my pocket.
We will still spend money out of pocket on food. That's part of why paying for the dining plan wouldn't work for us. We'd wind up paying for the plan and then paying more. We don't eat the way the plan is set up, so there will be things we buy because a location isn't covered; or because a kid just picked at their meal, and now wants 3 snacks that day instead of 2; or we do decide to do a few TS meals;, or we want an appetizer or side dish, etc. And that's fine. Because we had money budgeted for food right along. We just now don't have to spend all of that money.