Actually, I still hated Duck when the time came to kill him, or at least disliked him. But I liked Kenny, therefore I couldn't make him murder his son.
It's like asking your mom to kill Justin Bieber if you both knew it would kill her. WOULD YOU DO IT? It would solve a world-wide problem, but also kill your mom.
*Cough* SO, getting back to the point, I'm saying that I really don't like Duck, but Ben is my favourite character.