Smite priest is retarded, and for a different reason than you may think. It's just as retarded as being arms spec in PvE. Priests (and warriors) have specs that are tailored specifically for dealing damage such as shadow and fury; if you still try to make an inferior spec work, such as smite (or arms), then that is retarded.
In case of paladins, no matter how retarded you consider them to be for even trying to DPS, the fact is that if they want to DPS then retribution is the only spec that they have at their disposal. So your jesting remark is actually comparing apples and oranges here.
Ok, I defended the honor of ret paladins. See you.