You can get 3D via stereoscopic displays. You can get the realism and wrap-around view from huge monitors or projectors but VR let's you see the true scale of something in a way that no other technology can (aside from "actually being there").
For viewing objects where their scale is a critical aspect, VR is invaluable. Aside from arts, architecture is another obvious candidate.
The prospect of seeing just HOW large dinosaurs were is something that makes the 6 year old inside me just giddy with excitement.
https://www.vgvids.com/wp-content/uploads/2017/07/lone-echo-...
Underwater volcanic caves... With __things__ in...
The VR game-- er, experience-- "theBlu" has some neat visuals that really benefit from the scale.
There are also VR-native artworks where scale can be just another dimension to the art, like color or mood.
Here is Goro Fujita's "Worlds in Worlds" for an example: https://www.youtube.com/watch?v=EzsG1uqfDTQ
And if virtual reality is so real, why replicate what we already have? Why not create something entirely new? I think this is the premise of more than one movie recently.
Many modern paintings are massive in scale (bigger than my bedroom in some cases) and/or have many thick, voluminous layers of paint. Jackson Pollock is a good example. Those paintings look plain and childish when viewed on a tiny screen that fits in your pocket, as you don’t feel their scale, you don’t sense the depth of the paint and its texture, and maybe, you are also not in a suitable environment to view the arts. (IIRC some Mark Rothko paintings are displayed in dedicated rooms with dim light, as desired by the artist.)
But if you view those arts through VR, you can get a lossless, holistic view of the artwork. It can even be better than viewing in person as there is no crowd standing in front taking photos...