Even in this day of computers, pens are still a vital tool for writers, I guess I'm not alone in writing rough notes by hand and in fact I work up my poems to quite a final stage by hand, before committing them to the screen.
I like the feel and weight of a good solid pen, it feels more serious somehow, and perhaps helps me to take my writing more seriously. Also for environmental reasons, I like a pen that is built to last, rather than one that is going to end up in the trash. Fountain pens are I suppose the best as in the usual course of events nothing gets thrown away, you just fill the pen with ink and carry on. However for some reason, I've never quite got into fountain pens and I find them liable to ink blots and other untidiness (yes, i know, my fault rahter than the pen's!). My three favourite pens all take some form of refill, but the pens themselves have lasted years and will last many more.
Even throwaway pens though these days are available in more environmentally friendly models. I've seen pens where the pen itself is made from recycled paper or plastic, which is a good idea, if you like to have a pen that you're not going to get upset over if you lose it....
Pens for Weekend Wordsmith