The kneejerk responses you're getting from other commenters appalled at the thought of anyone taking away their precious wank sites and jazz mags rather illustrates your point.
More interesting are the potential social effects of pornography, in terms of relationship expectations.
In many Western nations, we have a plummeting birth rate, and this may well be because women are increasingly refusing to have sex on men's terms. Immersed in violent, degrading pornography, the expectations of many men regarding sex are now incompatible with women who want a loving relationship in which to raise a family.