Well, I for one am not telling anyone to "stick it out" and stay at a show that they are not enjoying. Or stay at a show that they specifically came to see crash and burn and then, gasp!, be amazed that their pre-conceived opinion made them actually, truly, hate the show (amazing!).
I am not telling anyone they are wrong to leave at intermission.
I am pointing out how WRONG it is to leave at intermission and THEN run home to your computer and post threads about how awful, terrible, dissapointing, heinous, etc, the show was.
There were several shows I wanted to leave...Blood Brothers, PHANTOM, and Titanic being three that come to mind immediately. I didn't, as I felt that for any opinion of the show to be valid, I had to see where the show went and ended up. It's only fair.
"My dreams, watching me said, one to the other...this life has let us down."