I much prefer 2d Mario to 2d Sonic, by a long shot.

I actually feel the opposite. Have always preferred 2d platforming. 3d has always just looked bad or gimmicky and I never really got used to it.

I have little interest in 3D Mario, but I loooove 2D Mario so yes.

What makes 3D so superior exactly?

I like having both 2D and 3D Mario games. I kind of fell off the 2D games for a while because I wasn’t enjoying the New Super Mario Bros Series of games. I’m optimistic that this will be more enjoyable