Franklin, something else to mention here is that in general, personal attacks or attacks on someone's character are considered bad form. The comment I made above (the one regarding an observation that many people are followers - often times referred to as "sheeple" for their herd-like mentality) was not directed at anyone in particular. You and Dan on the other hand have either directly or indirectly ("I don't read your posts anymore. Sorry") attacked me as a person, which is just a bit hurtful considering that otherwise there has been some great discussion in the thread.
I've never said that an instructor can't be helpful or beneficial - I've simple challenged the idea that an instructor is absolutely necessary to become an effective player. Some people genuinely believe that to be true, and they have given a lot of valid points regarding the benefit of a private instructor.