Knowledge is power and I think too many are afraid to give that up. I think too many of us, probably more than would admit it, think that someday, they are going to "turn pro" and end up making a living w/ their lens. I've been in that number myself at one time or another. The problem is that we fear that if we give up too many secrets, then others are going to interfere with that dream and make up increase our own ability. Far too often, when others say that it's impossible and much too hard for the beginner, what we are really saying is that we are afraid that they may outshine us.