Ok, I haven't flown a jet on an NDB app.(just some simwork, but this doesn't count) But I've flow a Beech Baron (seem speeds as a King Air) more than once to the bare mins., which resulted more than once in a goaroud (if I wasn't unable to pick up an ILS-signal).
If you practice NDB app.s in Europe, you will fly them regularly at the mins. And if you do so, you won't be surprised if you HAVE to do an NDB because the rest has failed.
And yes I'm in my 20's, and yes I know what an NDB app is.