I guess this could have just been a shower thought as well…
It might partly be that a lot of what is designed for a screen is made deliberately to be maximally appealing to begin with.
For example a film or tv show is shot with various lenses that create pleasing depth of field, color and light is carefully controlled. Same with high fidelity video games. Even the UI of your applications is made to be appealing and clean.
Sports are sort of shot like films too, and often the cameras can resolve much higher detail than our eyes alone can. The way a sports event is shot in high def can be like gaining the visual abilites of a hawk or something. The lens can zoom in close while our eyes can only squint.
Modern people lack an appreciation for the beauty of existence and the physical world. The most intricate and aesthetically pleasing creative achievements of the human race pale in comparison to the inherent beauty of nature.
Artistic expression is inherent to being human. Our creative achievements are part of the beauty of nature. A painting that can make you smile, a story that can make you laugh, a song that can make you cry, that’s all nature, and it is beautiful. If you haven’t found something that speaks to you yet, I hope you’ll keep looking
Don’t get me wrong, I appreciate art more than most. But there’s an exclusionary aspect that exists with art, wherein only some people can truly appreciate various aspects.
In contrast, nature is more universal and primal. Everyone, regardless of language or culture or education, can appreciate natural phenomena. The beauty of nature speaks to us on a fundamental level, whereas the beauty of art requires a certain degree of acculturation and intellectual effort to grasp.
Furthermore, human art is a reflection of nature and indeed a part of the beauty of nature, as you say. However, that inevitably positions it as a subset of the all encompassing beauty of existence as a whole. Artistic works are small mirrors reflecting back aspects of reality in interesting ways. But because they can only ever represent fragments of the greater whole, they are somewhat less awe inspiring.
Often, works of art can prompt us to engage with the beauty of reality, so I’m not condemning them in any way. I’m just saying that the representation can’t be better than the real thing, even if humans wish that it were.
Because most of what you look at in real life is mundane. But go find a nice sunset or a green forest, and you can appreciate it. When you see a scene in HD or 3D on the screen, there is a heavy selection bias to show you pleasant scenes that most people seldom see in real life. If it was super 4k and 3D, but it was just your same living room you see every day, it would be uninteresting. But the same camera showing a living room in a 10 million dollar house would be interesting. (And the natural views outside even more so, most likely.)
You know the film 300? If you ever play it with the saturation way waay down, it looks mundane as hell. Just a bunch of guys without shirts walking around.
As other people said, it’s novelty. Being near-sighted, I get that effect in real-life when I get new glasses. Everything looks incredibly detailed and amazing for a couple days until I get used to it.