Nothing wrong with these debates, as long as we understand it is a philosophical issue. I personally like to approach my shooting with a plan in mind. I know if I am out for landscapes, or birding, or portraits. If my needs change mid shooting, I swap lenses. Others prefer to use a zoom for this. Perhaps some people just wander without knowing what they will encounter, for that a zoom may work best. Or a single prime could work if you dont mind cropping. I think it's just a personal choice, I prefer primes, they seem to average better IQ and have less focus issues.