LaTeX is incredible slow at first but the true power comes from only having to do something once and being able to put it under version control.

I spent an afternoon getting a presentation template ready, now it's incredible easy to make a powerful, beautiful presentation ready. I tried to do the same thing with Powerpoint and apart from the frustration I always lost a lot of time when I (or Powerpoint) managed to screw up something.

It does in general lead to some embarrassing moments when working with non academics/developers. Somewhere there is a team of artists that still jokes about that developer guy that proposed to do his presentation in Latex.