Can't say I get that one either, but hey, to each their own...

I think some people are confusing 'prettiest' with best racing experience.

They're all incredible. Easily 8 of the best in the game both as tracks and visually.

Why is there no love for Wario though? I think it looks great. I get the urge to drive that one slowly to take it all in.

Personally, while I found its lighting lovely, its narrow railings and high contrast edges tended to produce some unsightly jaggies, at least to my eyes.

In order:

Hyrule, Dragon, Mute

While people have their own opinions on what's the "prettiest", the same thought has crossed my mind.
Let's put it this way I "voted" for Dragon Driftway but Mute City is overall the better course.
Still in the end it depends on what other thinks and what appeals to their liking I guess.

...all of them?! D:

Seriously though I think they all look great, but Mute City, Hyrule, Dragon Driftway, & SNES Rainbow Road are my favorites.

Mute City