The issue isn't whether I'll ever use one. That goes without saying. But I would like to, at least, hear from current students about what kind to get or how much to spend, how much is too much, etc etc.
Edit: That and I don't wanna be the kid who shows up first day of lecture with a stethoscope, not that I'm saying you'll do that. But there's always that fear, like the dream people have of finding themselves in their underwear in front of the class. I fear that if I own a stethoscope I may lose my mind and bring it with me to lecture one day, and nobody wants that to happen. So if I don't own one, I can't possibly bring it...problem solved...bad dreams gone.