My wife and I watch a lot of movies at home. It's one of our favorite pastimes. I also watch a fair number of movies by myself, if my wife is out of town or busy with something else. Both of these activities are enjoyable, and I like the occasional solitude.
But I enjoy the movies more when we watch them together, and I've often wondered why. It's not that we talk during the movie, or communicate in any way really. We're mostly silent, but we're side-by-side, and that in itself seems to enhance the experience of watching a movie.