purpose of the leader

After breathing a sigh of relief celebrating success in hiding the small fortune spent getting outfitted for fly fishing from your spouse, you put the gear to good use on a pristine trout stream. A few fly changes into your day, you realize the tip of your leader is starting to become stubby and must be replaced to maintain the taper from thick leader to skinny tippet. Congratulations! You just discovered the highest hidden cost of fly fishing – leaders!