Great post - I agree with almost everything (though you know my views on bluffing at low limits ), apart from this:

"and it should be the sole reason, to make cash"

Heavens no! If there's only one reason, it should be because you enjoy it. The cash is a bonus which will invariably come if you have the correct (and most enjoyable) approach to learning and playing the game. But if you're ONLY palying to make money - what a soulless and often unsatisfactory time you're going to have!