You would want to use them when you want to do bitwise operations. Just like you'd use boolean operators to do boolean operations, and mathematical operators to do mathematical operations.
There is an NES emulator written in JavaScript - it seems to make plenty of use of bitwise operations.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.