I think people assume that because you feel a mounting tension or sexual drive if you don't masturbate for a few days the same tension will continue to climb linearly ad infinitum. That would be absurd. Moreover, if you read online the diaries of porn addicts the vast majority of them go through a period of libido loss (a flat-line if you like) where they are unable to maintain an erection or reach orgasm easily. So no, it's not as hard as some people here seem to think...or maybe I just have naturally low libido.