Traditional drawing is still, fundamentally, my preferred method to capture and preserve the essence of true and fine art. Overtime its value will hold far better against digitized paintings.
Vector is a fun media for logo, business and comic illustrations. I use it a lot, first, for ease of use. It’s scalable and can fit to your size specifications without losing quality. Ideal for shirt printing.
Photoshop illustration is fast becoming the most favorite tool for artists to draw their masterpieces. And mine, too. It’s all digitized and can be converted to prints even on canvas.