I am amazed this only has 1 comment.

People like "zartimus" are AMAZING. (to me) And I mean it in the very literal definition of the word.

Providing a free lesson of this high-quality is one of the most selfless and dedicated things you can do with your personal time in the world. A persons time used for others is everything. And you, zartimus, do MUSIC a great service.

So if you ever get the feeling of "why bother", just know that we live a culture that is quick to ask and slow to thank. Many many people thank you. Even if they don't say it.