It is in itself an interesting subject and one which is worth reading about - if only to educate oneself about all the factors worthy of consideration. Mike Yardley wrote a very good, readable book on the subject - 'Gunfitting, the Quest for Perfection'.

I am always wary of people who dismiss something out of hand, especially when it is easier to do so than to actually learn what here is to be learned about a subject.

I like to keep an open mind and in education always promoted to my students and teaching staff the idea that before you dismiss a particular methodology, learn all about it, become a proficient practitioner of it, then offer an informed critique of its benefits and shortcomings in relation to he alternatives.