I spend ages whenever I have to do a powerpoint (or libreoffice) presentation.
Drawing a box with text in it will take me maybe ten time longer in PP compared to a transparency. Admittedly the lines will be straight, and the text more readable (assuming I choose a reasonable font size), but its so time consuming in comparison.
I can dump 7,000 words into powerpoint, chose a terrible font and terrible colours, fill it with weird clip art and transitions, and then bore and confuse my audience.
I like the idea of powerpoint. But there are far too many examples of suboptimal powerpoint presentations.
Perhaps there should be a gallery of good presentations (this probanly exists) which have the slides but also a video of the actual presentation, so people can compare the sparse slides and detailed talk.