Trust me, you're not the first guy to think about doing away with his sex drive. I spent way to much time watching porn when I was in my teens and twenties, and it's only now that I realize how harmful to my psyche it really has become. I remember vividly every seen, and this has really screwed my mind up, interfering with all the relationships I have in my life, male and female. I have read a lot about sex addiction, and most of the material says that this addiction is the hardest addiction to cure, going so far as to say that there is no cure for it, just treatment in managing how we react when the urges present themselves.
I'm not sure if you have a religious faith, but I have found that the only thing that helps is reading portions in the Bible that talks about certain individuals who like us are sinful beings, but they endured and made changes in the life by remembering that God is always watching you no matter what it is the you are doing. Of course this works only if you actually believe in God, and I do. The Bible speaks of Moses as "being steadfast in seeing the One who is invisible". For me this work. I'm not gonna say that I have never had a relapse, but for the most part, when these thoughts come up in my mind, I remember that God is watching my right now, and if he was in the room talking to me, I wouldn't give a thought to masturbating or allowing my mind to dwell on the perversions my mind has witnessed over the years of seeing so much pornography. Most are inclined to believe it doesn't work, but I know it has in my case. You are welcome to write me if you have a question at guthrie5312@gmail.com.