I'm still relatively new to the game, and I find that there are soooo many nuances of the game that are FAR more easily learned with someone showing you in person, than trying to learn from a book or DVD. From the basics, on up. It is simply atounding to me that you cannot see the benefits of instruction. Another pair of eyes, seeing what you are doing. Things you cannot see for yourself.
Does that minimize the need for individual practice and drilling, no. Working things out for yourself can be extremely rewarding, when it works. But you can also find yourself doing something the wrong way enough to make it habit, when a proper instructor could have saved you all the time and effort of that particular technique you were doing incorrectly for all that time.
Once again, we find that you engage in this because you like to argue, and we are feeding right into your need. So I'll disengage at this point. Don't worry, someone will start another CTE thread soon enough, and you can find plenty of willing participants to sate your online debating "need".