What's the loneliest thing you've ever done on a trip?

Most people go out alone, so I really can't remember what the loneliest thing I have done when traveling alone. After all, "traveling alone" itself is a lonely thing. If you have to say one thing, it is that when you want to eat a local specialty restaurant, you can't go alone for fear of being slaughtered. If you are alone, you can only go to the snack street.