Avid Fly fisherman here. I also tie Flies and it's a blast. There's immense satisfaction in grabbing the attention of a nice Rainbow, Brook, or Brown with something you've tied yourself. Hard to explain. Also, Fly fishing is not limited to Trout. Small and largemouth Bass, Pike, Streelhead, Kokanie, Ocean fish, Salmon etc. Basically if you can catch it with a spinning rod, you can also use a Flyrod.
My home waters are generally Trout species and I catch and release mostly.
My goal in life is to fly fish every single state in the nation.
It doesn't have to be expensive to Fly fish. For $250 bucks, you can get into quite a nice setup with everything you need except the clothes you decide to wear.
Sure you can spend north of a grand for just the rod from brands like Winston, Sage, Loomis, etc. and with the reel, line and all the crap one obtains for human comfort, it's easy to spend another 1-2 grand.
I liken it to automobiles: A $9,000 new car will get you everywhere a $109,000 car will. There are definitely some differences, but they both will get you to your goal.
Has anyone tried Tenkara? I also Tenkara Fly fish. It's the simplest and most intuitive form of fly fishing. A complete Tenkara setup can be anywhere from $50.00 to $300.00. I always have one in my car whenever I even anticipate being close to streams, rivers, or ponds.