Its not just men, women also enjoy porn. Porn is nothing more than a sexual aide for masterbation. It helps the person imagine a fantasy or get turned on and get off quicker. I am a woman and i watch porn both alone and with my fiance. Its a great way to spice up a relationship, learn new things, etc. Also alot of men and women watch porn because its fake and not real life. They can explore their fantansies without beind judged by someone.
its not that were obsessed, (although some men can be) its more that we watch it cus it helps with masturbation. Porns just a by-product of mankinds greatest ever past time :)