I can't speak for other people, but I don't even need to think about it it, so it is no harder than reading a map the right way up.
I was replying to someone who said
Turning the map around is for people who can't do space rotation in their heads and need the easier option.
Implying it was easier if you turned it round. For some people, clearly it makes no difference, just like reading upside down writing is no harder for some people.
The military seem to think it's a good idea to turn the map to the direction of travel, though, and it could be very important for them - if they got lost they might accidentally invade the wrong country. So I'm happy with my method.
Does anyone think it's actually harder to read a map which is orientated in the direction of travel?