When I first purchased my camera I decided to get the Nikon SB5000 as well. I occasionally shoot events but otherwise I rely solely on natural light for my photos. Last week I attended a The Kickback Series by Miller Lite in Chicago. The lighting was perfect - I managed to take some great shots outside.
Near the end of the evening the inside of the venue became very low lit. I tried to take some photographs of some of the guests dancing. Here were the results:
Even at an ISO level of 12800, the photographs did not turn out. When I take night shots I usually can get away with no speedlight. However, I still had a decent light source that assisted me. In this case, I definitely missed out on a great photo opportunity. So will I start carrying around my speedlight in my purse? Ha, who knows but it is something to think about.