People consistently underestimate how much they will enjoy seeing a show, going to a museum, visiting a theater, or eating at a restaurant alone…The conclusions stem from five separate experiments. In four of them, the researchers surveyed people about certain activities, probing whether they preferred to participate in them with others or alone. In the fifth, Ratner and Hamilton put the preferences to the test by gauging whether people actually enjoyed visiting an art gallery more when they were in the company of others, compared to when they were alone.
What they found is that people expected to enjoy gallery less when they were alone, but they actually tended to have just as good a time whether they had company or not. [link]