:airplane:Your point is correct, but the reason they do is if your have complete electrical failure and don't have a Ipad or notebook with you that has that ILS system in it, then you gotta do it the old fashioned way!
that doesn't make any sense.
how would knowing true heading help with an instrument approach in an emergency.. all the bearings on an instrument approach are magnetic, all headings given by atc are magnetic.
and also, I've never heard of an ipad or notebook with an ILS receiver (have seen handheld vhf's with VOR mode tho) -- maybe you mean GPS. Even so, those headings are magnetic also.