Let me put it this way
The only tackle I own is fly tackle. I fish mostly for trout, coho, steelhead, in roughly that order. If I'm going to go fishing for say, shad, or small mouth bass, or whatever, I have to figure out a place and a way to do it with a fly, because I've already got about all the tackle I can afford, thanks.
Now every once in awhile, someone invites me onto their boat to fish for halibut out on the Strait, or giant sturgeon on the Columbia, and they put a rod in my hand with one of those fancy reels with all the gears, loaded with dacron or mono or spider wire or whatall they call it these days. Well I'm not a dummy; I can figure out how to use the thing. And I've got good enough manners (and sense) to say yes when I get invited.
I fish with a flyrod 99.99% of the time because that's what I do, and I've been doing it that way for so long now that a gear rod can actually make a monkey out of me. But hell, the cork on a baitcaster doesn't burn my palms or anything. And you ever play one of those 8-ft sturgeon?