Diversity is good; without it we would be unable to survive as a species. In ancient times, each member of the tribe would have had a special skill - healing, storytelling, smithing, flint-knapping, hunting, weaving, gathering herbs, cooking, divination, etc. Nowadays, as people become more advanced in their Pagan practice, they often specialise in one or more specific skills, related to their interests and aptitudes. This is a good thing, as we cannot all be brilliant at everything, and sometimes we need to go to a specialist for help.