I prefer to use pencils, more specifically mechanical pencils. Reason being is because I like to have the chance to erase my mistakes when made and using a pencil just comes naturally to me a I've been using it for so long now. With a mechanical pencil I also don't have to worry about the hassle of sharpening a pencil, it just takes a few click and I get more lead with ease. With pens, I only use it when needed such as for signatures, but other than that I don't like using them as much because when I make a mistake I'd have to scratch it or rewrite it which is more of a hassle if I were to sharpen a pencil. Plus, my handwriting looks a little different from when I write with a pencil, which I don't like too much.