You just gotta try it. Chances are if you like casting a fly rod, and landing a fish on the fly, you'll also like the centerpin.
For float fishing, it's what i consistently grab. I love my baitcasting rod and have a good reel on it (Luna 253?), and it's my priciest setup, but I always use my "entry level" pin. Even for barfishing I grab the pin rod, though the baitcaster makes more sense.
They're not really that pricey and if you can cast a baitcaster you'll have no problems with a pin using a 20g float/weight or larger (never tried anything smaller).
I don't catch that many fish, but when I do I want to enjoy every moment of the fight. That's how I view it.
It's like when you're fighting a fish on the fly and you feel more "in tune" with the fish and your surroundings..a pin is like that for gear fishing. I suppose you can set your drag really low and use your thumb on a baitcaster..that's probably a similiar feeling. Though, it's the way you hold the pin rod and the pin reel that I really like when fighting a fish. Something about the positioning. Some people might not really care about that though, so as it's been said before: personal taste. Functionally, not much difference between a pin and baitcaster IMO.