you don't know that the actors are consenting adults.
but...
best not think about it.
it might spoil the fun.

fact is that the majority of people who act in porn have been sexually abused.

and when the majority of themes in porn involve s&m themes and older guys with (what could very well be but if we don't think about it it won't spoil our fun) underage girls or people abusing their positions of authority i don't expect it does a great deal with respect to preventing future generations of people who have mental pictures and perhaps even desires urges and actions that are consistent with material they have trained their bodies to erotically respond to.

doc john has a funny view of sexual desires where having thoughts is about as condemnable as actually performing the act.

i don't agree with that. but i do think that it is time that people take some social responsibility.

back to whether one would be happy about ones mother / daughter / wife posing in porn, i guess.

the standard def. of porn is material that is produced (made) and / or consumed for the purposes of masterbation or other kinds of erotic arousal.