If you aren’t going to take advantage of your relationship with the audience– the main reason for having a live presentation– you really shouldn’t have one at all.  If you’ve ever attended a presentation that felt like a waste of time, this is probably why you felt this way.  And you never want your audience to feel like you’ve wasted their time.

If all you have to present are facts, a live presentation is overkill and likely to bore your audience to sleep.  Try an email or memo instead.  On the other hand, if you want to change peoples’ minds or get them to do something, a live presentation with an emotional element to persuade them is definitely the way to go.