I shoot carbon or aluminum for economy, I suppose.
A set of machine-matched wooden shafts is half the cost of aluminum or carbon. After stains, paints, lacquer, nocks, etc. you're only saving about 25% if that. They're still less durable and less consistent. Matched sets are often just as expensive as modern shaft materials. Let's say you go the other way, then. Buying plain dowels or the materials to make your own dowels/shafts will save you a lot of money, but not time. The time invested is often far more time than you would spend working to just buy a set of modern shafts.
I shoot a longbow because I love the utter simplicity of it, not to reenact another time. I trade in a little precision and ease compared to a compound for a bow that not only requires less maintenance, but is also significantly cheaper to buy and maintain. It's not the same with wood arrows, though. For me, I feel I wind up paying more for wood one way or another. I shot them for years, and I've tried to go back. I've tried to find a good balance, but it doesn't work out the way I'd like. I wind up paying more for them, be it in money or in significant amounts of time. Even then, where's the limit? Why not build a selfbow, wooden arrows, and knapped heads? I've gone that route too. It's a lot of fun but takes even more time, which I don't have as much of anymore. We all have a balance between technology and tradition that works for us.