Write about a Situation in which a Hard Ethical Decision Is Made Involving Utilitarianism

Someone is out one night, all alone, walking his dog when an alien spaceship flies over and abducts him. He finds himself lying on a table, above him is a large alien fellow explaining his current situation. The gist of it is that young alien larvae are being implanted into his intestines, where they will grow until they are strong enough to survive on their own. Eventually, they will be shat out by way of his anus, into the toilet, where they will travel through the sewers and into other humans' latrines. …