I've been blogging about programming since 2011. I can't say that it has had any direct career impact, although it hasn't hurt either. I have kept writing because it helps me clarify my thoughts. I've also reviewed books and courses, and writing those reviews makes me learn the content much better.

There are other reasons too that I have written about in this post:

https://henrikwarne.com/2017/11/26/6-years-of-thoughts-on-pr...