Well for the exact same reason why it's so fun to drive a very expensive very flashy sports car through a crowded area - you get a lot of attention and everyone thinks "wow this person must be loaded". If that's your thing of course.

Same reason why rich people open up their gardens and dining halls and art collections to the public from time to time - to show off.

This happened to me. The Greisinger Museum is basically a rich person showing off their hobby.

https://www.greisinger.museum/

I found it extremely interesting. Not because of the Tolkien lore but because it gave me a sneak peek into how someone really rich is living.