I've been an underwater photographer for years and years. I've been fortunate enough to see my photos on sites, in publications, on buildings and in books around the world. The question I get asked most is: What gear did you use to get that shot.
Its a ridiculous question, and the result of a culture that thinks if it just has the right 'gear', they can do what I do. If we play the right guitar, we'll be like Slash. If we wear the right shoes, we can be like Mike..... I freely share my gear, my camera settings, and even my post production techniques - because 99.99999% of the people asking are not motivated enough to try to do what I do (get up early, haul the gear, tirelessly working for the shot...) or not talented enough to see the shot, compose the shot and capture the shot.
The same goes with fishing. People will see me catch fish, and ask the same question: What are you using... (or where did you catch those... same question really - they're looking for a shortcut) So I tell them. I give them my jigs, I tell them where I was, I even show them how to use the gear...
Most of them never catch a fish, let alone dozens of fish that I'll bring in from a place. They don't have the time, the patience, the reflexes or the sheer will to work at it. The stuff I do takes work, skill, experience.
There are no secret fishing spots anymore. I have never once fished a place I can drive up to and not seen another fisherman. Not once. Every bay, marina, harbor, stream, river, reservoir, estuary, lake and lagoon you can drive to and walk up to, someone is already fishing there.
I clicked on "it really doesn't matter' on the survey, because it doesn't. Most people will never get out of bed early on a weekend to go fish no matter what I say. And even fewer will fish the places I fish. And an immeasurably small number will ever be able to do what I do with a rod and reel (what many of us enthusiasts, the ones who fish every week) can do. Almost none of our spots are in danger of being fished out - especially the bays and marinas. Its a stupid, selfish, self-important myth that keeping public drive up and walk up spots to yourself will keep the fishing good.
I would much rather share and see others enjoying the places I've learned to enjoy. They'll bring their kids. They'll bring a buddy going through a rough patch. They may just bring themselves to re-center and relax. How is my blocking any of this goodness by being a selfish prick a good thing?
I share my knowledge freely. Because in the end, it really doesn't matter - they'll never show up. And if they do, they won't catch like I catch... and if by some miracle they get good, get motivated and start to catch and have fun, even better.
Its the old paradigm that tries to be hoarders to these places.