The problem I have with Taskwarrior is that (from a layman's point of view, i.e. mine) there's a lot of new information you need to learn just to get to the point of a simple TODO. Whereas Trello has the massive benefit of being intuitive and you're up and running in seconds after making the board without even having to read any docs.

Anyway I'd be interested in learning Taskwarrior, but in my day job I work in a team and I can't make them use that kind of tooling.