If you're relying on reflective paint, what about fallen trees, deer, pot holes, other debris and road users not coated in reflective paint? If someone is using the road and relying on the lines to keep them on the route, then they are using the road unsafely.
We can't fix all problems, therefore, we shouldn't fix any problems!
If fixing a problem makes another problem far worse, let's just ignore that other problem!
After Goliath's defeat, giants ceased to command respect. - Freeman Dyson