We have been driving to and from our French home in Normandy and all round the area for over 20 years and find maps completely satisfactory. We can indulge the family hobby of 'That way be quicker, but this way be prettier' or 'lets go down here it looks interesting' without a problem and, as another poster said, French road signage, number and destination, is excellent and can be found on even the smallest roads.
When there were road blocks some years ago road maps got us round all the blockages onto little cross country routes and we caught the ferry on time.
I find I travel better if I can put my road journey in context, see where the road runs in relation to nearby towns, famous places and people,and the landscape and geology. Even on regular long journeys in the UK the road map is on my lap, if I am not driving and if I am, I will have studied the whole route and 20 or 30 miles each side of it before starting the journey. I am always finding items of interest that enliven my journey and keep me alert and focussed. Paradoxically I would find a journey that only consisted of instructions on the road ahead, both boring and confusing.