>>4456963
>primes are for hobbyists traveling with minimal inconvenience
You realize that a zoom is more convenient than swapping primes all the time, right?
Zooms sacrifice the creative control that a set of primes affords the photographer in favor of convenience and framing control when movement is limited. This can be significant for certain industries of photography like sports or journalism. The photographer who shows up with a single prime is (hopefully) well-practiced in shooting that focal length and knows he needs nothing else to achieve his goals, and at that point convenience is only a secondary consideration if anything.