Music is like a mountain. There are many approaches to the summit (that can never be reached), and it seems impossible to view the other approaches with all that mountain in the way.
To declare my viewpoint, I am a conservatory educated musician (reader). I started my musical journey meeting Mister Crotchet in school piano lessons (reader) before going on to become kinetically musical playing punk drums and bass guitar (non-reader).
Nowadays I seem to be identified as a classical composer type and firmly in the reader camp. I run into musicians or their parents who suspect my training must have restrained as well as trained my mind. These folks seem to feel defensive about not reading music and sometimes launch into complicated and passionate defences of this approach. I see this same dialogue played out online too and I think it is worth exploring a little here.
The TL;DR version is that ultimately music is sound used to communicate. The multiplicity of possible ways to understand and communicate instructions for creating that sound are decidedly subordinate to the sounds and their effects. Whatever works for you is great, but understanding some of the implications of the path(s) you choose to climb the mountain is useful. Continue reading To Read Music or Not: Musical Tribes and Approaches