I'm a prime example. I game a lot. I've currently got one game active (Trollsmyth's Labryinth Lord game), another on hiatus (my Mongoose Traveller game), a third about to start (Arcana Evolved Is This Fair? sequel), and then the dungeoneering with the boyfriend that will soon be getting more regular. I've also got a shelf full of various roleplaying systems and supplements. I'm obviously devoted to the hobby and the industry.
But the two don't mix much. Trollsmyth's game uses one book, Labyrinth Lord, plus his
foul and unhinged decrees house rules. The Traveller game is the same deal. Much as I like the Mongoose Traveller core book, I have no interest in or use for any of the supplements, nor do my players. Dungeoneering? Swords & Wizardry. I've used a little material from Fight On! but any major modifications will likely be entirely of my own design. The Arcana Evolved game will likely use a few books from my collection, as the game it's based on did, but that's mostly because I have the books and want to use them. There's nothing I would have gone out and bought for the game.
I like reading roleplaying books. I like trying new systems. I like fiddling with things and building settings and characters and places. (That's how the Traveller game got started: I was bored and wanted to make a subsector. Then, hey, if I was going to make a subsector, why not go ahead and run a game?) It's a peculiar and fortunate feature of the hobby that there are so many peripheral activities to enjoy that aren't play, particularly when play can be so tough to arrange. I know those kinds of "rainy day" activities are a big part of what's kept me interested in roleplaying over the years.
But I don't need them to play. And that's the main thing that I'm here to do. And I don't need the industry to do that. I appreciate having it around, surely. But I don't need it.