Many games (such as fallout new vegas) have an aspect or mode dedicated to Realism. However many of these games seem to be almost impossibly unrealistic even in these modes. For instance in Fallout, you can still fast travel and instantly teleport across a large distance. Or in many other games, you may need to eat or health may not regenerate, yet 5 bullets to the skull do not kill you. Why do people bother with realism mode when the game itself isn't realistic?