Unless one is born into a family that has worshipped the tutelary deity and participated in rituals and festivals at the shrine over many generations, he takes his baby to the tutelary god and simply follows convention.
一方で代々に渡って氏神を崇敬したり、祭事に従事する家でない者には、お宮参りはかなり慣例的に行っている場合が多い。