I don't mind eating alone at all! In fact, I get really irritable if I don't get enough alone time.
It's weird where I live, though. NOBODY eats alone, so on the rare occasions I sit alone in a restaurant, people look at me like I'm a freak. In the town where I go to school, it's not unusual at all.
Oh, and in my town, there aren't many restaurants. Two Chinese places, one mid-level sit-down restaurant, one diner type place (that's rarely open), and one "nice" club. Everything else is fast food.