I do not consider it an insult, but rather a compliment to be called an agnostic. I do not pretend to know where many ignorant men are sure - that is all that agnosticism means.
Lions, wolves, and vultures don't live together in herds, droves or flocks. Of all animals of prey, man is the only sociable one. Every one of us preys upon his neighbor, and yet we herd together.