I can see how you would say that only you could truly appreciate them. But that's kind of the point, I suppose. Conversation about killing and a duck? Had to be there.
To me, video is usually much to chaotic, you get too much information so that you can't extrapolate away from the moment. With pictures, you catch a lot of tiny moments that can better be used to relate a whole experience together for someone who was not there. I can understand how video could be more informative, but it's usually harder to understand without context, I guess. I usually do mostly pictures, and then for interesting things that a picture can't do justice on, a video.