good point GA...
Looking forward to the first Trout Pro Shops...or Bluegill Pro Shops...
Actually, fly fishing is a lot of fun. Fish aren't always small...there are some pretty big ones to catch...(Trophy northerns come to mind

)
But one of the keys to consistently catching fish is versatility. Bass guys used to be about tossing plugs to stumps...then, through tournaments lots of information began to be disseminated about different ways to find/catch bass...to the point that a 'typical' tournament guy has at least 10-12 specialized rod/line/reel combinations for applications.
Like a golfer has sticks.
Fly guys don't carry a quiver of rods (7 weight for windy condtions, 5 weight for calm; extra spools with sinking tip, sinking, WF etc)...although, I'm sure they'd like too...
Daryl once said something about 'the right tool for the job'...sure I can use a tack hammer to break concrete...but it won't be the best tool for the job.