Vector graphics are very old thing, it were the first 3D applications.
Its advantages were that needn't memory, in those days memory was very small and slow, but needed a special analog vector monitor that was something as an oscilloscope and not a raster device as is the computer monitor or TV.
It worked fine in those days because 3D images were limited to lines and geometric solids, but you cannot do a curved surface with a vector device!
When memory become available in size and with enough speed vector monitors were replaced by raster monitors and vector graphics belongs to history.
There are still some 2D applications that still use this concept as TTF fonts, but its only use is for something that can be described by line segments.
You can make an hypeboloid with vectors but never a sphere!

Stupidity also evolves!