in a way it is. but its much much more involved then spinning or any type of fishing. There are literely millions of different combos of flies you could use. From different patterns, sizes, colors, and even combinations of multiple flies. From my perspective fly fishing really gives you a chance to find out what the fish are feeding on during a time in the day. It almost makes you able to look into the mind of the fish and see what they are thinking. And once you get the experience to pick out a fly that hits really well, it will be the most fun you can have fishing.
Plus you can fish alot of different types of streams, from ponds or still bodies, big slow moving rivers all the way down to creeks that you can actually step across.
But the main deal about fly fishing is that it is a different experience for every person.For me it is a way to go hike back into somewhere that possibly noone has ever seen before and catch fish that no one has ever caught before. It is a huge release from the outside world.
Its just one of those things that you will never understand until you experience it.