We know that feeling.
"Did I place that grass in the right spot? I'd check, but I don't wanna tear down my decorative wall!"
Essentially, it just allows you to rotate the camera angle by the cardinal directions. This makes building much easier.
It's simple, yet useful.
Please, RobbyZ, collector of old newspapers and programmer, add this in?
James Newton commented
Definately a good idea, the current camera angle makes the game very confusing for new players.