There's something about writing that makes me want to do it Maybe it's the way everything can vary, from a happy emotion to a sad one, from one perspective to the next, the possibilities are endless. 

But, it could also be the way you can express yourself however you wish. You can be completely honest and create a diary of a sort, like Anne Frank. Or you can completely change everything, just keep the storyline of it all in some sort of shape or form. 

Or it could be the fans. The appreciation of your work that you spent time on to give others joy, excitement, possibly even fear. The fact that you can actually write a story that people will cry over because they have personally lived through that character. 

Writing is passion that I have because of all of those things and many more. Write because you want to, not because you have to. What's the point if you can't express yourself?