I include porn of various flavors to hold people's attention during the talk. I try to be as entertaining and energetic as possible but my talk is a lecture and people tend to drift when we hit a topic that is uninteresting to them. Because I only give this talk at erotic clubs/organizations, I can use porn to hold their attention. I'll also admit to enjoying people's reactions to the various pieces I include.

Why don't I have a version without porn? People who can't ignore porn they don't enjoy aren't the kind of people I'm interested in helping. None of the material isn't anything you wouldn't reasonably see in a public dungeon (Japanese animated pornography aside). I do grant that there are people who won't like the porn I chose which is why I've licensed it the way I have, anyone is free to take the content and modify it as they wish to suit their or their community's needs. If that means removing all the porn that's fine, but it's something someone else will have to do.