I'd say, "might as well", since that's what's being spread on the fields anyway, but in fact, human poop isn't such great fertilizer; too many nitrates from our meaty diets. Most sold garden fertilizers are sheep-dung, and the field farming industry gets their herbivore poop directly from the ranching industry.
(Okay, I guess if he's a vegetarian...)
(Okay, I guess if he's a vegetarian...)