"Mxsmanic" wrote

If I had failures serious enough to fall back on a magnetic compass, the
presence of the compass would not be very reassuring overall.


That's your opinion then. I can speak from my own experience, I've been in
that situation a few times and the magnetic compass has been a great help.

Of course without training and practical experience in using the magnetic
compass, its value is limited. But using it happens to be included in the
pilot's license curriculum, and for a reason.