One thing where it is useful is manipulating image data. You can get a raw pointer from the Bitmap class you can then manipulate with unsafe code which is order

One thing where it is useful is manipulating image data. You can get a raw pointer from the Bitmap class you can then manipulate with unsafe code which is orders of magnitude faster than the normal variant. Basically you're saying, for a single method or a block of code "Please turn off all safety nets, but only for these 20 lines". The places where it's useful or necessary are quite few, though.