I've only stayed 'deluxe' at
Disneyland, not Disneyworld, and only because those trips were gifts I gave to my parents. I just can't justify the price for deluxe at WDW, it seems ridiculously overpriced to me when I compare what is offered to international high end hotels. It's not that I couldn't afford it, but I could use that money for so many other things or other holidays.
I have stayed value, it wasn't bad, but I prefer moderates and can usually find a good deal. I like POFQ and riverside, I prefer Coronado and I'm staying there and CBR for my upcoming stay. It's quite honestly about $125 difference per night (with my AP discount) between my room at CSR and the cheapest room at a deluxe (Saratoga springs). Add that up over two weeks... that's just not worth it to me.
That said, if deluxe makes you happy, you can afford it and the price doesn't bother you, go for it. To each their own. Obviously some people see value in it because they keep booking up and Disney keeps building them, and I think people just like to vacation differently. There are lots of people out there who probably think it's silly I pay for a moderate vs a value, but that's where I feel comfortable staying.
Another thing I would add is that Disney Springs area hotels are looking increasingly appealing to me. I would have stayed there for my upcoming March trip, but I'm now taking my brother and his fiancee as a gift and thought it was better to stay on site.
That said, as some food for thought...
I could have got a 13 night stay at a Disney Spring area hotel, where there was a walking path to Disney Springs, for about $450 less than my 8 nights at CSR. And I would have earned hotel points! I think I'm going to do two WDW trips next year and give that a go.