For what we use it for, powerpoint is actually useful. Most cases what is put up on slides is examples. And I find it much easier to follow an example that is written down than one that is read. The other point that is overlooked by the powerpoint haters is that the principal value is that it rescues incompetent speakers. There are some people who are good speakers at IETF but the speaking qualification is only an opinion and a keyboard. Being able to organize a logical series of thoughts does not come into it. I am more than happy to present without slides. The reason I write them is that the meeting organizers DEMAND them. And they are quite right to do that because I have two speaking modes one of which is PowerPoint and the other is 'TED talk'. Guess which one has the technical content.