Why is Mario Kart so great?

I promised a post on Mario Kart and here it is:

Why is this driving simulator so cool? Cuz there are Mario characters? Cuz you can throw some turtle shells to your companions? Well, while the first point maybe but the second point, in my opinion, is one of the reasons that makes Mario Kart incredible.
Mario Kart in fact, in addition to offering many "Power Ups" with a thousand different purposes (lightning, rockets and the terrible winged shell or thorny shell) also offers incredible tracks; with a thousand different settings (Like Waluigi's pinball on Mario Kart DS) and with an always different track: With the exception of some very basic tracks, in fact, I am sure that you won't find 2 Mario Kart tracks the same, not even in those proposed in a new one chapter of the saga from a previous one as, sometimes, they change something.
Another thing that makes Mario Kart great is the soundtrack, especially that of the Wii version; as well as being very atmospheric, it offers an idea of ​​freedom and lightheartedness. I think the soundtrack is the most underrated thing in the series.
A final note on Mario Kart 8 Deluxe for Nintendo Switch: The mere fact that some tracks go upside down (not being the rainbow road) makes it incredible, as well as showing the capabilities of the Switch which, although small and less powerful than the PS4, PS5 or XBOX One (Series X, Series S and Series D), however, has a lot to give even to the most experienced gamers, as well as casual gamers (For many years, the Nintendo's target audience)