Because even 2080Ti is pathetically underpowered at it to deliver anything beyond basic reflection/shades gimmicks.
And that is not going to change any time soon.
Have you seen any RTRT game? Compared to RTRT switched off? And I recommend a video, not still images.
Yes, RTX cards are too slow to run more complex light effects. But what they do now makes such a huge difference already.
The goal today is not to make games look like movies looked 10 years ago. It's not even a goal for the next decade or two.
It's just to make game look better - just like with every major change in GPU feature set.
It always means higher hardware requirements.
It's 2020.
You can buy a $200 card for a decent 1080p 60fps gaming. It's enough for most.
Or you can pay few times more and get a bonus. Before RTX that bonus was mostly about resolution.
Today you have another choice: more realistic picture.
It's a choice. It's not mandatory. Why are you so much against it?
Also, think about 4K.
We take it for granted today. It's a reference point for high-end GPUs.
But it hasn't been like that in the past. When 4K came out, many people were against it: it decimates fps, it doesn't change a lot - same arguments you use.
And to some extent they were right. In many games moving from 1080p to 4K doesn't impact gaming experience very much.
Many people still game at 1080p. We have high-end 1080p gaming monitors and so on.
And lets look at total cost of 4K vs RTX - something people here seldom think about (maybe because most of you have vevry expensive PCs anyway).
For 4K you need a more expensive graphics card, but also a more potent CPU, a 4K monitor, maybe more RAM. You end up with an expensive PC.
For RTX you only need an RTX GPU. The rest can remain pretty basic and cheap.