It's not about it not being important - it is important to me as my PC is hooked up to my main TV and my son is obsessed with driving games and it would be great to play with him. It's about what is considered feature complete for a game like this, and split screen is not one of those features that is required for a sim racer. If it ships without the Nurburgring or is missing an entire class or popular make of cars, or lacks online multiplayer, or has crappy physics, lacks pit stops, different tire compounds, different liveries etc. Those are the kinds of features that have to be there.