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I agree that PowerPoint is sometimes misused with poorly prepared slides and overly long presentations.
I think the the alternatives your presenting are not when PowerPoint would be used anyways.
Meet Face-to-Face - well most PowerPoint presentations are face-to-face. If you're presenting something to an audience, what else would you use?

Ask questions about problems, etc. - you may want to use PowerPoint to present problems, but is a presentation the right forum for problem solving?

Watch the tangents - This has nothing to do with PowerPoint. You can have tangents with or without PowerPoint