Obviously depends a lot on which vacation spot you goto.. but even if snuffing a nose at 2k a week where you gotta bring your own linens... doesn't really justify $500-1000 a NIGHT for a single room+bathroom Marriott level hotel room. Your house probably also has more than 1 bedroom+bath
Total cost of a beach vacation is high... but you also control most of what you are willing to spend on. You can eat out, or eat in. You don't goto the $100 amusement park EVERY NIGHT. Food is overpriced, but you typically can pick the price range you want. The beach is usually free (except NJ.. lol).
So a WDW spot differs in that you basically are locked in to spending at the parks, while another vacation you may opt to do less or do various things. In some ways WDW was better in that regards because 'buying in bulk' WDW park days used to get very cheap.. giving you very affordable all day entertainment.
Now, you are getting nickle and dimed after being in the park... they've eliminated most of the 'bulk buying' discounts... and they've raised prices on top of all of that.
When we are at the beach, at most we eat out at most once a day.. rest of the meals are typically at 'home'. Entertainment is $30-$50/head when we do stuff, but you don't always go out every day... and our beach is free