Do you sometimes engage in a normally fun social activity "by yourself"?

There are many fun activities that are normally done in groups or with more than one person, like going to see a movie, going out to a sit-down restaurant, etc. Do you sometimes do it alone? For example, do you sometimes go see a movie in a theatre all by yourself instead of with a friend or family? Or go to a restaurant all by yourself? How do you feel when you do that? Do you ever feel “self-conscious” about the fact you’re by yourself and that other people may be wondering why you’re all alone?