I was into it pretty heavy for quite a while. I got out of it for a couple of reasons. First, drop outs and late tyers were getting to be a chronic problem. So I tightened up the rules on deadlines and was declared a nazi. Gotta love bulletin boards sometimes!
Secondly, I have more flies that I'll ever fish with. I've given away at least half and still have thousands. Here's some of my storage flies. It is about half of what I have in reserve. It is a gallon ziplock filled to bulging. Friends and new fly fishermen usually leave well stocked.