I generally go to local theatre with family and friends. However, I often go to NY theatre alone, and I love it!
I find I can completely focus on the show and be completely involved. I really have a more truthful reaction to shows when I attend alone -especially when it is new material. I often feel like I can't express that I dislike something that someone else just payed $50-100. For example, I wasn't enthralled with Avenue Q or Grey Gardens. I attended Avenue Q with a friend, and I felt like I couldn't be truthful with my opinion that it wasn't that hilarious. When I saw Grey Gardens, I was really able to think through the show and form an opinion in my own time. I also never have to worry about feeling uncomfortable about what is going on the stage. When I go to shows that are risque, I'm often worried about what my guests think or feel about the content. Not a problem when I attend alone.
I,too, seemed to socialize with other loners at the theatre, and I quite enjoy it. I do, however, like to share my favorite show with my friends when I return for repeat viewings.
So, that was the Drowsy Chaperone. Oh, I love it so much. I know it's not a perfect show...but it does what a musical is supposed to do. It takes you to another world, and it gives you a little tune to carry with you in your head for when you're feeling blue. Ya know?