>>521305613
Typically only 50% of the male population reproduces because the other half would die in war or work place accidents. This was so common that father's would pay men that managed to survive to their 20s to take their daughters so that she would actually have one of the few men left.
Porn addiction is simply a natural correction for the half of the male population that won't die in war or in the mines. Porn passification is needed since there are no dangerous jobs and war isn't worth it either.
Without it, it's very likely we end up like the middle east with constant wars because there's a high surplus of men without wives due to polygamy.