Handful of reasons for this, and they're pretty much non-negotiable...
1) The plugin we're using for search engine optimization has a 'Terms Of Service' clause about no porn...
2) Given our 'open door' policy, just about anyone can get on the site and view that stuff. In order to keep the forum as lightly moderated as it is, it's easiest just to kill it...
3) With all the free porn sites out there (and I KNOW they're out there!

), why do we need it here?
4) Believe it or not (and I'm with you guys: I find it VERY hard to believe!), some people are simply turned off by it. We're looking to expand the NESR community, not discourage potential members...
5) Some potential advertisers just won't have anything to do with a site that contains that kinda material...
If all goes well and everybody abides by the new rules (you listening, Will?) we may in the future allow soft (clothing only) stuff, bike related of course. But we'll see...