You must have missed one of the posts. Viagra isn't only used for, well, you know, it is also used in cases of pulmonary hypertension.
Please get off the judgment seat. No one is perfect and everyone doesn't have your sense of right and wrong. Maybe you could try praying for Rush instead.
I would have never guessed there was a secondary use for Viagra. The tv commercials never mention it.
C.S. Lewis had the number of the self-righteous better than anyone I know:
"Of all tyrannies, a tyranny sincerely exercised for the good of its victims may be the most oppressive. It may be better to live under live robber barons than under omnipotent moral busibodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated; but those who torment us for our own good, will torment us without end, for they do so with the approval of their own conscience." ~ C.S. Lewis