The longer we identify with the idea, the more we desire to try out the idea. We begin to dwell on the idea and it occupies more and more of our mental energy. Increasingly, we associate ourselves with what we justify to be the beneficial and appealing aspects of the idea. And if you haven't tried it, don't knock it. We as a nation began to accept the idea that unless we had personal experience with something, we had no right to criticize it or call it a sin.
Many people still think that way.
What has happened, however, is that Satan has taken that philosophy and couched it in even more subtle terms. We don't have any real intention of engaging in the actual experience or behavior, primarily because we don't want to be caught in the act by others who might criticize us. We assume that if we never actually do in reality what we are doing in our minds, we remain righteous in God's eyes. This faulty thinking has been around for at least two thousand years, and very likely since Adam and Eve were expelled from the Garden of Eden. But I say to you that whoever is angry with his brother without a cause shall be in danger of the judgment . . . .