This hobby is about engaging in some serious fucking: all kinds of role plays, fetishes which may be considered debauchery, sodomy. It constitutes duos, trios, greek, kink, fetish, sex, sex, and more sex.... with strangers.  

I'm all for morals though. For instance, I would not want to go beyond my boundaries engaging in sex with a minor. If the girl is too young, I don't find them attractive anyway.

So, my train of thought is that it's  
1) with a person of legal age of consent and  
2) there's informed consent of what's going on...  
3) everybody's safe
... morals become quite loose in this business.  

Fucking a stranger and getting BBBJ is considered to be morally wrong in many societies. I prefer society does not think of it that way but it is what it is