When I do to a show, I will applaud wildly if I love a number. If I like it, I will applaud healthily. If I don't like the number or the performance, I do not pretend that I did. I feel that there are enough people applauding to avoid embarrassment for the performr(s) and see no reason to applaud something I didn't like.
I have paid good money, travelled to the city, etc. Why should I be guilted to applaud if I don't like it. It is not like I am booing. I am talking about individual numbers, not every one. To me, applauds for a well done job just adds to the experience, but I am not going to pretend.
i have to admit that I rarely applauded at the Rocky numbers a few years ago because I thought the score was awful and everything sounded like filler leading up to the grand finale. Same thing with Bullets Over Broadway. I applauded wildly several times during Something Rotten, but did not feel compelled to do so after a couple of mediocre numbers. Shoot me.