I agree with your position on the issue and how you explained it. Jesus confronted many people in his day whose hearts were so hard that they condemned the unclean as sinners and in turn sinned in their treatment of those people. I believe the end of your article really drives home the underlying point on the subject. Can a man masturbate without sinning in his heart? Only if it is a purely physical process with no thought or fantasy attached to it, which is extremely hard for us. Men are wired to use sex to project and release emotionally. Without a partner, what emotion is being released and who is it being directed at?