Small country side roads routinely lack a central line in Sweden. Even smaller roads can lack the side lines too. And I'm talking asphalt roads here still. The same happens on many residential streets in towns and cities.

But sure, it would be rare to have a large road or street without markings. But most roads aren't large. Most travelled kilometers happen on large roads, but that is not the same thing as most roads. And many individual journeys would involve at least a little bit of small roads at the beginning, end or both.

And of course, if they are covered with snow and ice during the winter you can't see the markings anyway.

Many American roads don't have lines. Residential roads, parking lots, many business driveways have limited markings.

Then there's roads with just the center line markers with no road should markings.

Then there's a whole class of roads of lines over "demarked" old lines that weren't demarked well, or lines fading that should've been painted a long time ago.

I'm surprised you've never seen a non-perfect road?

Does Italy count? https://upload.wikimedia.org/wikipedia/commons/0/0c/Google_M...

Here in Bucharest there are quite a lot of big boulevards that do not have them, either because they haven’t been repainted over in a long time or because they laid new asphalt without bothering to repaint the lines (this happens a lot, unfortunately, and is very frustrating).