Earlier quoted context omitted.
Considering most of the world views it and society is fine, I think I can posit the contrary. And think of all those hippies from the 70s that would have sex parties in the park. They're all grown up now. Don't see them running around raping and murdering. Might run into them at the swinger club though :)
Well, birth rates are below replacement rates in most western countries where pornography is consumed more than elsewhere. Also, more people are single, more men are not sexually active, high divorce rates, etc. Ofcourse, correlation does not imply causation. But personally I do think pornography contributes to some of the above in some ways.
Out of cohorts that consume no porn, to what degree are those variables you cited different? If those cohorts are introduced to porn, do those numbers change? In those cohorts, is there full honesty about usage? It's very difficult science to fo.
There are studies that show porn use particularly in women will lead to higher divorce rates [1] though, it is noted the relationship is curvilinear, as porn use goes to a high level, the effect of separation decreases. Are people unhappy in marriage seaking out porn, or is porn causing the unhappy marriage? Are people who are likely to be divorced later more likely to seek out porn? Correlation and causation are incredibly hard to tease out. Is it the porn's fault? Who knows, in some specefic cases - probably, but generally speaking it is not supported by data. If supported by data, to get that causation claim, then a dose and effect relationship needs to be identified as well as a clearly articulated mechanism of action.