Who doesn't enjoy laughing? Who doesn't like making other people laugh? That said, a "journalist" has a serious job. Some duties: relay critical information in a timely manner, hold public leaders accountable, serve the general public. Why then is Twitter so often filled with snark?
Energy comes from humor. However, each of us, even the crotchety, must locate our sense of what's funny, raucous or wry. Although jokes often elude me, I really respond to the spontaneous comedy of life itself.