Because I don’t want to be forced to adapt by others.
We are all forced all the time to follow social norms. Short of moving to a cabin in the woods, this is inescapable, for better or worse. In this master/main debate it seems like we can make some people happy with minimal cost. In the end it is a tiny irrelevance, when compared to other norms being changed.
Society has to acknowledge that half of its members are of below average intelligence. And we need a way to handle the lowest tenth, since they are a danger to themselves and others.