Nobody should watch it. It has effects on the brain that will literally destroy you, whether it be vanilla or avant-garde. I'm not doing this for religious reasons, but rather, scientific evidence I've read that shows the disgusting effects this industry has on any brain, young ones included. I don't watch porn anymore (though I never purposely relapsed before and after). It will destroy one's psychology, and for that, it's grounds to have it banned in specific areas.
All I'm saying here is that porn should never, ever be watched, no matter the religion or political affiliation. If anything, sane people don't do this.
Religious reason: It's not biblical under the Levitical food laws. In those laws, things like pig, dolphin, catfish, and vultures (to name a few examples) are not considered food to us (unclean foods due to what they eat).