It needs to be mentioned that disc brakes also require a different fork construction and rear triangle and it is heavier
I find the non-disc frames superior. As a rider of 1985 era touring frames with cantilevers, I will be switching one to v-brakes now that a road brake lever is available for V-brake pull.
Note when a tread lasts around 10 years that road levers for v-brakes have finally appeared ..No need for travel agents.