RE: why
High performance = high maintenance. One of the things that caused me to quit compounds was because it seemed like I was constantly having to tune and retune the blasted things. I finally had a belly full of it.
That Hoyt ProHunter I bought in 1985, I'd tune it for tournament shooting in the spring, then tune it for hunting in the fall, and that was all I'd have to do. Every compound I've bought since they quit using steel cables, I've had to retune at least once a month. They shoot a much faster arrow, for sure, but I decided I don't want to spend that much of my free time tuning my bow instead of shooting it.
With my longbow, I string it up, check the brace height and go shooting. I might have to spend just a couple of minutes twisting the string to adjust the brace height. It doesn't take as much time to do that as it takes to pull the compound out of the case and put on the stabilizer.