I'm not sure if you recall but the removal of the adult section was like taking the breathing tube out of person in dire need of it.
I do not participate in the adult section but I understand why management has chosen this feature.
I actually had an adult group early on in the beginning of answermug. It is a good way to keep the stuff that some people don't want to discuss out of the main part of the site.
I could have also asked myself "Are there not already enough answer/question sites and this would not be here. There is always room for more and unless something has changed that I don't know, comparing AM Adult to a porn site is not very accurate.