I'm also surprised and disagree again.

I'm running a campaign now and jmit takes place in the Underdark. Guess what, they worship Lolth and are pretty evil. I've got some Duergar down there too. I took ideas of the Drow city straight from the Into the Abyss module. I didn't use the exact city, but it was my base of ideas.

Additionally I've taken ideas from the Acquisitions Incorporated book and made the item "Orrery of the Wanderer" a key part of my story. The reason I did that was because I found it to be an interesting item with interesting lore.

Look at it like Legos. If someone handed you a big crate full of Legos you could build something really cool. In fact you could build anything.

However if, instead of a big crate, someone handed me three medieval sets and a ninja set. If I build them exactly as instructed, I still get a cool set. Sure I would have a hard time making a WW2 fighter out of the medieval and ninja sets, but that's ok. And if I tweak the sets a little I still get something that is my own.

Sounds like you have a table where the worldbuilding has a big place. That's awesome but I really feel that worldbuilding is only one, arguably secondary, aspect of RPGs and not even the only one where creativity expresses itself.

Even if we stay focused on the world building aspect of the game, when playing in a pre-defined setting, you can still find plenty of uses for your creativity to fill the gaps that will present themselves as your game unfolds (that is if you're not playing at a table full of FR nerds that read every single novel and campaign setting out there several times over).

Plus, many come to a point in life where it's complicated to spend more than a few hours each week on TTRPGs. I'd rather spend time fleshing out characters, scenes and encounters than coming up with a pantheon of gods, most of whom will never come up in game. Sure, worldbuilding doesn't have to imply heaps of prep ; you can improvise a lot on the spot. But I've already got enough shit to track and remember before/during/after game time.

Personally, I also feel much more confortable GMing in a world that's well fleshed out. Sure, I can do it myself but it will simply take me down way too many rabbit holes and will proabably end up with me delaying sessions because I was too busy writing the grand history of that neighborhing kingdom the PCs probably won't visit rather than doing proper prep.

Not to mention that there is a lot of creativity to be expressed when you have actual constraints, constraints like an existing world for example. And if that world is too bland or consensual to my taste I'm always free to spice it up as I please, because you know, creativity.

Certainly, RPGs are first and foremost a game of creativity and imagination but I don't think that the want to worldbuild is, on its own, a really good metric of how creative you are, nor that prefering pre-defined settings makes people wholly unworthy of the hobby.

And I want to add that if the fact that no women showed up at your hetero orgy ruined it for you, I think it's because you clearly haven't been creative enough.