"...a desire to attract a younger demographic."
Every time abccbsnbc cancels a show, they cite this as the reason. Why is it so important to attract young-uns? Don't they know that the over 40 crowd is bigger and has more money??? Their "desire to attract a younger demographic" is exactly why I DO NOT watch commercial television.
I believe the theory is that those under 40 are more influenced by advertising. This will eventually become a moot point as PVRs gain in popularity and advertising revenue becomes a less viable method of funding production.