I, too have experienced feeling "left out," but like Betty K., I belong to the Van Alstyne, Texas Quilt Guild and if anyone there tried to be the quilt police, everyone would laugh.
My suggestion to you is "Gut it up," go back to the quilt guild where you found rude people and if they are rude again, ask them what their problem is.
And when new people come in, you be sure you welcome them with open arms.
My mother always said, "They might as well be mad as me." Take her advice and make them a little mad. They can't eat you and it might do them good.
froggyintexas