What is it about vector medium that fascinates you? What tools and applications do you use to create your vector arts and what does your workstation look like?
Versatility for the most part. Vector can really fit any sort of product. You can change color schemes in seconds, increase the size without losing quality, no more saving in massive 300 dpi format for print, etc. The advantages are huge.
Essentially though it depends on what look you are going for and vector itself seemed to suit my style and approach a lot better than raster. It's all a matter of taste of course. I primarily use Adobe Illustrator for all of my vector work, it's actually the program I use 99% of the time.