Professionals may feel that square dancing is just a kind of calisthenics, without artistry (which is not really true);
People who don't want to take part in square dancing may feel that it is too ostentatious and embarrassing;
Neighborhood residents may feel that it affects the environmental peace, and are disgusted by it.
But if you ask around among the participants, almost no one says square dancing is bad, and they can give you a long list of reasons why.