I hear similar questions to "Why do I need an instructor" with respect to Uni studies, Ham radio Licence and many more things. Nobody wants to do the hard work - but they want their reward anyway. Sign of the times I guess. Scares me, folks out there with qualifications they never earned. I see it so often, folks who fly but have no idea of the theory and knowledge they are meant to know, folks with degrees but cannot demonstrate any real knowledge. Dumbing down is deadly and is growing rapidly.