There seems to be this odd culture on this board of doing/having the barest of minimums and doing otherwise makes you some kind of tryhard/nerd-whacker.
Maybe you'll never "need" some of that stuff. But if you happen to get into a situation where it would have been handy to have, but the person would have lived without it, then I reckon you'd still get a nice feeling from having there.
If money isn't too much of an issue, then I don't see why it wouldn't be nice to just have it there. And as far as the stethoscope issue goes (I don't think it was really part of your question Trev, but marineman mentioned it and my sentiments can be generalised to more than stethoscopes), the better the stethoscope, the more likely you are to hear things that matter and that aren't background noise (shocking I know). If you asked a builder about his drill, I bet not too many buy a $20 set from K-Mart. It's a tool of your trade that you use almost everyday, and if you take pride in doing what you do well, then you should have good quality equipment to do it with, I reckon. I know that you don't "need" a master cardiology to take blood pressure, but if someone wants to have one for the odd occasion when it may come in handy, then good on them. I don't know why some of the people on this bored walk around with a scope made by matel and think they are somehow cooler for it.