Nothing, in my opinion, quite has the feel and the charm of using a fountain pen whether you're writing, drawing, or anything else. I've found that since I started using them about two or three years ago my handwriting has improved by leaps and bounds.
Ink for them comes in every color and shade under the sun so I can write with a color that perfectly matches my mood, the time of year, or setting.
Fountain pens also just look very classy to me. I can't explain it very well, but there's something in the look, feel, and experience of using a fountain pen that I absolutely love.