What is the benefit of using Unity Application Block or DI in general with Entity Framework as in my sample case?

In your scenario you obviously don't need it. People use dependency injection when they need to inject dependencies and replace them with other implementation - most common reason is automated testing and mocking / faking / stubing dependencies. Another reasons are dynamic behaviors.

In addition to the points Ladislav has made, there are a few others.

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.