The Testimony Theory: This theory relies upon the notion that apologists' main motivation is faith and belief. DCP noted that he does Mopologetics because he "believes" that he should. Thus, the Testimony Theory posits that Mopologists received a spiritual witness that Mopologetics ought to be undertaken. In some cases--theoretically speaking, of course--it seems plausible that certain Mopologists prayed to Heavenly Father over this issue, and they were given a warm sensation, thus indicating that they should do apologetics.
This, and a overall love and respect for truth, education, intelligence, and the life of the mind, are the primary factors.
The Chagrin Theory: As much as they love the LDS Church, many apologists are no doubt embarrassed about certain aspects of it,
This is where exmos begin projecting, and as this particular "theory" is actually self referential, we'll skip it.
The Righteous Warrior Theory Similar to the Chagrin Theory, the Righteous Warrior Theory posits that Satan's forces (i.e., anti-Mormons) are seeking to destroy the Church by telling lies and luring away the members.
More projection. This actually defines a number of the core membership on this board, including the author of the OP.
On the other hand, you have the Will Schryver types: Mopologists who don't necessarily think that the Church is weak, or that it has any problems, but who feel the need to attack critics anyhow.
Could it be that the targets are just so fat and juicy that temptation gets the better of them?
And my favorite...
The Failed Mormon Theory This describes an apologist who has failed to "measure up" to the intense cultural, financial, and spiritual demands of Mormonism, and thus Mopologetics becomes a way of compensating. Whether the "failure" entails addiction, same-sex attraction, criminal convictions, or never having gotten married, the Mopologist who fits into this type uses apologetics as a psychic means of "making up" for whatever was lacking. Coggins7 would seem to be a classic example of this type.
What is the real 800 pound Gorilla in the room in all of this? Its the naked reality that the authentic "failed Mormons" are those who have apostatized from the Church and abandoned their covenants. The "failed Mormons" are precisely those who have failed
as Mormons from within; those who have failed to live the Gospel, keep God's commandments, and endure to the end, and there lies the Great White Whale of
failure...