To the kind of people that say "oh, I have a real life, I don't need to see the same thing on the computer screen" I must ask, "do you regularly perform the kind of actions you see in videogames in real life?".
I get that same feeling whenever someone uses that argument. Nobody is trying to simulate your life, they are trying to simulate the appearance of objects in your life (glass, refraction, radiosity, etc). The experiences you have in the game are going to be more exciting than going to work and paying bills.