There's a fine line between an argument and being argumentative. You've done a fine job at picking apart every line but seemed to have missed my only point. Be open to new ideas, experiment and use what works for you.
What point did I miss. Doing what is comfortable or easiest is not always best. Eg: Buy a gun that fits your hand. If you don't know how to hold it, how do you know if it fits?
You said: "Try them all and use what works for you."
Why not "Try what skilled and experienced people have done, as they have put millions of rounds down range, and millions of dollars of research, and millions of hours of time collectively into what works best" BUT be open minded and willing to try new things.
Then once you have a foundation, you can judge what works.
Letting others "make mistakes for you" and then taking advantage of all the training, science, research, and time they have put into learning what is the best for sport, combat, or target shooting I think is much more efficient and safe manner that will get you much better results in the end.
And a great saying to close it with, as I see some people here bashing education, training, and using "I have been shooting for years" as an arguement or validation.
Practice DOES NOT make perfect. Practice makes permanent...
Perfect practice makes perfect. Therefore you need to know what "optimum" or perfect is before you can judge perfect...