OK so we've sort of moved into a wider discussion.
lol, vacations in and of themselves are not "wise economical" things to do. Now I do, do a pro and con when I travel. that's how I ended up with a dvc in the first place, for the way we like to travel, we evaluated the most cost effective way to go over the long term. . so I think the disconnect is you evaluate worthwhile as the bottom line while for many there are other considerations. I went to Europe, for me it was worthwhile to save for extra year so I could go business class. Yes economy would have been a lot cheaper and I also would have needed Xanax to deal with 11 hours in a cramped seat. Now can I afford to do that every year? nope but again that's because I'm not wealthy so I save and plan.
You can sleep anywhere. for me the worth isn't just in the bottom cost of the room. When I go to wdw I want to sit on a balcony. when I go on a cruise, I need a suite with a balcony. I'm not going if the bottom line means a berth on the bottom with just a hole to look out of . oh heck to the naw. Yes it would be more economical to go on a cruise and just take advantage of the food that comes with the ticket.
So I will admit ,not all my purchases are "wise economical" things. as you said, if it was no one would be onsite, no one would buy luxury cars, no one would eat out at fancy restaurants. dropping 500 bucks on theater tickets to see a show would definitely not be a "wise economical" decision. but all those things imo enhance the quality of life.
And in the interest of full disclosure, I've gone to wdw for long weekends and never stepped foot in a park. I love it.
Heck, if you wanted to get right to the bottom of it. if all anyone did was plan vacations on the best economical choices Disney itself would be closed or better yet it would be like six flags.