but news users under 35 are slightly more motivated than older groups by how entertaining the news is and how sharable it is, and they are slightly less motivated than older groups by a sense of duty to stay informed of news or by its personal usefulness to them.
I agree with this assessment entirely. Unfortunately, I need to be entertained at least a little bit to maintain my interest. I do also care to be able to share things of interest, though most of the time only if I feel the subject matter would interest others too. Sharing things that are not necessarily "entertaining" also has its place, but less frequently, and only when it is of true importance or relevance.