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![](https://lemmy.ml/pictrs/image/q98XK4sKtw.png)
Because it works and we didn’t need to change anything in the last 20 years. I don’t even think about it.
Whenever I try something else, problems come as soon as I want something that’s not default. Which is often.
I don’t even know how to install Gentoo. I did it two times, second time was when upgrading to 64bit architecture.
I am from cheap part of Europe. While you can get glasses for 20 Euros, with those kind of requrements 250 sounds about the same.
I guess some countries might get prescription, but I doubt “light frame and light lenses with darkening” would qualify.