Usually I believe it's a combination of facts: - People don't think they can actually do it well enough to be significant for someone else (when they want to s

Usually I believe it's a combination of facts: - People don't think they can actually do it well enough to be significant for someone else (when they want to share knowledge) - When they do, depending on how it's done, not getting the traction on something could take a hard toll on one's self esteem. - It might have a negative effect on one's life, if you put something out there, it's there for everyone to criticize. You are exposing yourself, what you believe to be right and what you hold dearest to you in your beliefs. - Time is always a constrain. We've got a finite amount of time that we can dedicate to something, juggling different priorities and trying to prioritize writing might be something hard when it's not how you make a living. If you do it for fun, you might always put first those things that have a more direct impact on your life. - Feedback loops are hard to come by. Unless you have a close group of people that can give you a hand, you will never be done editing your own creations, and will probably have a very narrow view of what to change to make it better. This is something I wanted to chime in, as I've gone through most of these. I just started writing some silly topics on my field (DevOps) and while doing this, I realized most of this points. In my experience, overall what I wrote was a 10 mins read on medium, however it took me a couple of hours to write it down, got two friends to do a review of it, and previous to that I re read it at least 5 times making modifications. It's time consuming, and I wasn't even doing it for the views, it was something I've wanted to do for a while, however for something that maybe 50 people saw, it was a huge time commitment.