I have a pretty large emacs config. I wrote it over 4 years. I tend to figure out repetitive tasks on my workflow and code them to key bindings. It saves time in the end and it is quite lazy. I also get all crazy refactoring tasks at work, cause colleagues know I will write a little emacs script and have it done in no time. So 4 years of time "wasting" seem to be valuable for my employer and colleagues.

I use org cause I can write code in multiple languages as well as having my notes and thoughts on the process. Again colleagues like that I then share those as HTML. I like that is instant documentation. Trello and family don't do that.