Jack Daniel
Legend
That's argument enough when all you have to go on is precedent of past history. Why does a paladin cast spells? Because he's a divinely inspired warrior. Well so is a ranger, so shouldn't he get divine spells too? The difference between God and Mother Nature, metaphorically speaking anyway, is enough to warrant a difference in clerics and druids, and so it is with their martial counterparts, the paladins and rangers. I like to think of it as a sort of cosmological symmetry.