Christianity doesn't need any of that, because it's true.

Pratchett is a successful author -- this has gotten him on God's good side, and it is why all of us supported him throughout his life and career. It is a shame to see Satan's work take hold late in the man's life, and with nothing to be done about it. The medical establishment cannot treat his affliction -- it is obvious to any good Catholic like myself that he has been possessed with demons.

If Pratchett is allowed to take his own life, he will be lost to us, and nothing but an eternity in hell will await him. We cannot, and must not condemn one of God's favored sons to this fate. I will roughly enumerate the path he must be forced to take in order to stand the best chance of safeguarding his soul:

He must be placed into a full-time exorcism program. Loosen the demons' seductive grip, and he will have the choice of retaking his own reins; this will be evidenced by him regaining complete faculty of his mind. The stages of this process are of an increasing yet necessary intensity.

1. He is to be kept in isolation for a fortnight, or however long the deacon sees fit. Only purified fluids are to be given to him -- they shall burn the unholy presence out just as it is starved of its sustenance.

2. He must proselytize to as many as his platform will allow him. This is a gambit forced upon the demon: either you release him, or Satan is sure to lose many future souls.

3. He will be scourged for long months by the greatest inventions of pain the deacon can think up, under God's guidance. No creature of Satan is beyond the temptation to sell short his master to avoid agony. This phase will escalate as necessary, and for the remainder of his life if he is still not free. The little remaining time he has is as nothing compared to the eternity that lies beyond, and while some would object to this kind of moral calculus, we must do it to be truly moral. "Therefore submit to God. Resist the devil and he will flee from you." (James 4:7)