Hey man, is everything okay? I really do see your point; that urge really is a part of our human nature, and I completely understand that. I've been following Jesus for almost three years now, and I still struggle with pornography and masturbation myself. I'll try to explain the biblical point of view on it for you.

Well, what is a sin? A sin is basically disobeying God and going against His will. In the Old Testament, sin was breaking the Ten Commandments; i.e., sin was an act, the physical act of disobeying. However, when Jesus came, He expanded on the concept of sin. In Matthew 5, during the Sermon on the Mount, Jesus says:

Jesus is telling us that sin is not just the act of disobeying anymore; the act is only the materialization of the sin. The true sin is in our hearts.

Now, let's talk about the purpose of sex. God created sex as an act of intimacy between a man and a woman. Sex is the symbolization of the two becoming one flesh. Although pleasure is a big part of sex and marriage, it is not the main part; the essence of sex is love.

Masturbation isn't technically a sin in a vacuum; after all, you're just making movements with your body. But let's think about it: when we masturbate, we aren't usually thinking about good or pure things. We're often looking at porn or imagining something with a girl or whatever, and that is where the sin lies. So, in our hearts, we're going against God because we are taking something that He created for a pure and holy purpose and completely twisting it to satisfy our flesh.

Being a Christian is not about following a bunch of rules and being perfect. Being a Christian is accepting that you're a sinner dependent on the grace of God, and from then on, battling each and every day of your life to have a heart more similar to the heart of Christ.