Question

Why might someone use a topographic map instead of a coordinate map ?

Answer 1

I think because it makes more sense when trying to figure out where your going

Answer 2

Topographic maps are used by hikers and backpackers to plan routes, estimate travel times, find water, good campsites, and track their progress on hikes. They're designed to depict the three dimensional shape of the world (mountains, valleys, plains, etc.)