My explanation of why masturbation is forbidden by God, will be a comparison to idolatry. I will list bible verses of idolatry in the hopes that the reader can see the comparison with masturbation.
Psalm 135:16-18; 16 They have mouths, but they speak not; eyes have they, but they see not; 17 They have ears, but they hear not; neither is there any breath in their mouths. 18 They that make them are like unto them: so is every one that trusteth in them.
Exodus 34:14; For thou shalt worship no other god: for the Lord, whose name is Jealous, is a jealous God:
As we can see, idolatry is cheating on God. Idolatry is also a relationship with a thing. A thing that has no life, and can do nothing but be a thing, except God allows it to exist.
Masturbation is like idolatry. The thing you mate with is a thing, and not living. It is not your type of flesh either. It certainly can never feel correct, which is damaging to your mind. If you are married, then you are cheating, and cheating with an object.
Masturbation causes an addiction. Some people master-bate without pornography, but most use it. Masturbation causes a person to loose their ability to mate. It also makes them loose possible future relationships because of the sexual release, the lack of sexual motivation and drive.
Some woman will not mate with a man who master-bates. They think it is unclean. Some woman only mate with men who have been in abstinence for some time.
After masturbation the human body will stink. Not master-bating causes the human body to begin smelling nicer, this makes the man or woman more attractive. After masturbation the body is less attractive.
Men all over the world are fighting to put an end to masturbation and pornography. They fight masturbation and pornography the way people fight drugs and alcohol. There are focus groups and meetings about quitting masturbation.
Lord Jesus, I pray that you can bring me out of temptation so that I will no longer masturbate. It is written in your word, to let those who cannot control them-self marry.