Ah, those happen too, though not as much at the type of interdisciplinary conferences where you'd also have a lot of humanities people--- seems to be mainly a thing for people who need equations in their presentation, esp. in cs-theory. I sort of prefer latex presentations myself, but just because I like editing source-code-like stuff rather than editing a presentation in a GUI tool.
> [...] seems to be mainly a thing for people who need equations in their presentation, esp. in cs-theory.
Indeed. At the International Conference on Functional Programming last year LaTeX was the norm. I enjoyed the hand-written slides somebody had produced on their tablet pc.
