The purpose of apologetics in religion.
I thought this was a very good and succinct purpose of apologetics. On the Mormanity blog, a commenter, "Pops," wrote
"The goal of apologists is to knock down obstacles that might prevent others from taking their spiritual quest down avenues the former have found fruitful.
God could easily prove the truthfulness of the Book of Mormon. But then, wouldn't that sort of defeat his purpose?"