Utilitarians should take into account all consequences, including the cost of creating incentives to become utility monsters.
The practical impossibility of taking into account such game-theoretical considerations and other important indirect effects of decisions is one of the (less important) reasons why I see little to no worth in utilitarianism.
steven0461:
The practical impossibility of taking into account such game-theoretical considerations and other important indirect effects of decisions is one of the (less important) reasons why I see little to no worth in utilitarianism.
Nevertheless, your point is very good.